Smalltalk with James Robertson: category: py4u http://www.jarober.com/blog/blogView Smalltalk Evangelist, Industry Watcher jarober@gmail.com Thu, 04 Dec 2014 21:57:37 GMT http://www.cincomsmalltalk.com/images/cst_small.jpg Smalltalk with James Robertson http://www.jarober.com/blog/blogView 50 81 en-us James A. Robertson Copyright 2011 James Robertson 2014-12-04T21:57:37-05:00 39.214103 -76.878807 PY4U 63: Exception Handling continued http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY4U_63:_Exception_Handling_continued&entry=3595183057 py4u Thu, 04 Dec 2014 21:57:37 GMT

I'l starting to upload episodes of Python 4 You that James recorded and had queued up ready to publish.  This episode continues the discussion on exception handling in Python.  Enjoy.  David Buck.

Exceptions

 

Tags: python, exception

]]> 3595183057 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3595183057 http://www.jarober.com/blog/blogView?guid=3595183057 http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3595183057 PU 4U 63: Exception Handling Continued http://www.jarober.com/blog/blogView?showComments=true&printTitle=PU_4U_63:_Exception_Handling_Continued&entry=3575181436 py4u Thu, 17 Apr 2014 09:57:16 GMT

I'm starting to post episodes of Python 4 You that James recorded but didn't upload.  Episode 63 goes into more exception handling in Python.  Enjoy.  David Buck.

Exception Instances

Tags: python, exception

]]> 3575181436 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3575181436 http://www.jarober.com/blog/blogView?guid=3575181436 no James Robertson PY 4U 62: Using the Exception in a Handler In Python, you can take the instance of a raised exception as an argument to your handler; today we'll have a look at that. 1:18 python, exception nonadult James Robertson PY 4U 62: Using the Exception in a Handler http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3575181436 PY 4U 61: Else Clauses in Exception Handlers http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_61:_Else_Clauses_in_Exception_Handlers&entry=3575015110 py4u Tue, 15 Apr 2014 11:45:10 GMT

Today's Python 4 You looks at "else" clauses in exception handlers. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:

Exceptions

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]]> 3575015110 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3575015110 http://www.jarober.com/blog/blogView?guid=3575015110 no James Robertson PY 4U 61: Else Clauses in Exception Handlers Python lets you add a single else clause to a handler - and it'll get executed only if the execption(s) being handled don't happen 1:19 python, exception nonadult James Robertson PY 4U 61: Else Clauses in Exception Handlers http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3575015110 PY 4U 60: Exceptions http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_60:_Exceptions&entry=3574577926 py4u Thu, 10 Apr 2014 10:18:46 GMT

Today's Python 4 You looks at exceptions and exception handling. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:

Exceptions

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]]> 3574577926 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3574577926 http://www.jarober.com/blog/blogView?guid=3574577926 no James Robertson PY 4U 60: Exceptions Today we'll have a look at exceptions in Python, and how to handle them 1:42 python, exception nonadult James Robertson PY 4U 60: Exceptions http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3574577926 PY 4U 59: Importing and Using a Module http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_59:_Importing_and_Using_a_Module&entry=3574407138 py4u Tue, 08 Apr 2014 10:52:18 GMT

Today's Python 4 You looks at module use in Python - how to import and use one. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:

Modules

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]]> 3574407138 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3574407138 http://www.jarober.com/blog/blogView?guid=3574407138 no James Robertson PY 4U 59: Importing and Using a Module Today we'll import the CounterApp into another Python file and use it 1:20 python, module nonadult James Robertson PY 4U 59: Importing and Using a Module http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3574407138 PY 4U 58: A Simple Class Example http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_58:_A_Simple_Class_Example&entry=3573974528 py4u Thu, 03 Apr 2014 10:42:08 GMT

Today's Python 4 You goes over some of the initial basics on classes in Python with a simple example. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:

Classes

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]]> 3573974528 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3573974528 http://www.jarober.com/blog/blogView?guid=3573974528 no James Robertson PY 4U 58: A Simple Class Example Today we will go over a simple class in Python, as a prelude to adding test cases 1:14 python, class nonadult James Robertson PY 4U 58: A Simple Class Example http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3573974528 PY 4U 57: Debugging in Idle http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_57:_Debugging_in_Idle&entry=3573797009 py4u Tue, 01 Apr 2014 09:23:29 GMT

Today's Python 4 You looks at the built in debugger in Idle. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:

Debugging

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]]> 3573797009 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3573797009 http://www.jarober.com/blog/blogView?guid=3573797009 no James Robertson PY 4U 57: Debugging in Idle Today we'll take an overview look at the built in debugger in Idle 2:00 python, debug, idle nonadult James Robertson PY 4U 57: Debugging in Idle http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3573797009 PY 4U 56: Getters and Setters http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_56:_Getters_and_Setters&entry=3573364454 py4u Thu, 27 Mar 2014 09:14:14 GMT

Today's Python 4 You looks at how you implement getter and setter methods (for attributes) in a Python class. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:

Getters and Setters

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]]> 3573364454 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3573364454 http://www.jarober.com/blog/blogView?guid=3573364454 no James Robertson PY 4U 56: Getters and Setters Today we'll have a look at gettr() and setattr() in Python 1:19 python, getter, setter nonadult James Robertson PY 4U 56: Getters and Setters http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3573364454 PY 4U 55: Adding Class Members http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_55:_Adding_Class_Members&entry=3573195654 py4u Tue, 25 Mar 2014 10:20:54 GMT

Today's Python 4 You looks at how you can add class members to a Python class without "up front" syntax. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:

Class Members

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]]> 3573195654 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3573195654 http://www.jarober.com/blog/blogView?guid=3573195654 no James Robertson PY 4U 55: Adding Class Members In python, we don't need to declare attributes of a class inside the definition; they can be dynamically added anytime. Today we'll set up a simple "data structure" type of object as an example 1:05 python, data structure nonadult James Robertson PY 4U 55: Adding Class Members http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3573195654 PY 4U 54: Name Mangling http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_54:_Name_Mangling&entry=3572757000 py4u Thu, 20 Mar 2014 08:30:00 GMT

Today's Python 4 You looks at how name mangling is used to create some support for pseudo-private variables. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:

Name Mangling

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]]> 3572757000 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3572757000 http://www.jarober.com/blog/blogView?guid=3572757000 no James Robertson PY 4U 54: Name Mangling Today we'll have a look at how name mangling is used in Python to help support private (by convention, not actually private) members in classes 1:06 python, name mangling nonadult James Robertson PY 4U 54: Name Mangling http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3572757000 PY 4U 53: Multiple Inheritance http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_53:_Multiple_Inheritance&entry=3572579837 py4u Tue, 18 Mar 2014 07:17:17 GMT

Today's Python 4 You looks at multiple inheritence in Python. This can be a tricky subject - you might want to refer to the documentation pages for this. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:

Multiple Inheritence

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]]> 3572579837 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3572579837 http://www.jarober.com/blog/blogView?guid=3572579837 no James Robertson PY 4U 53: Multiple Inheritance Today we'll have a look at how multiple inheritance works in Python 1:40 python, inheritance nonadult James Robertson PY 4U 53: Multiple Inheritance http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3572579837 PY 4U 52: Object Tests http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_52:_Object_Tests&entry=3572158402 py4u Thu, 13 Mar 2014 10:13:22 GMT

Today's Python 4 You looks at how you can identify the class or type of any Python object. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:

Object Types

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]]> 3572158402 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3572158402 http://www.jarober.com/blog/blogView?guid=3572158402 no James Robertson PY 4U 52: Object Tests In Python, you can ask objects whether they are instances of a given class, or whether a given class is a subclass of another. 0:57 python, class, inheritance nonadult James Robertson PY 4U 52: Object Tests http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3572158402 PY 4U 51: Overriding Base Methods http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_51:_Overriding_Base_Methods&entry=3571985813 py4u Tue, 11 Mar 2014 10:16:53 GMT

Today's Python 4 You looks at how you override inherited methods in a subclass. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:

Overriding Inherited Methods

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]]> 3571985813 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3571985813 http://www.jarober.com/blog/blogView?guid=3571985813 no James Robertson PY 4U 51: Overriding Base Methods Today we'll have a look at how you can override an inherited method in Python code, and how you can invoke the base behavior from within that overridden method 1:50 python, inheritance nonadult James Robertson PY 4U 51: Overriding Base Methods http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3571985813 PY 4U 50: Subclasses http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_50:_Subclasses&entry=3571551640 py4u Thu, 06 Mar 2014 09:40:40 GMT

Today's Python 4 You looks at subclassing in Python. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:

Subclass

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]]> 3571551640 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3571551640 http://www.jarober.com/blog/blogView?guid=3571551640 no James Robertson PY 4U 50: Subclasses Today we'll look at how a subclass is defined in Python 1:21 python, inheritance nonadult James Robertson PY 4U 50: Subclasses http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3571551640 PY 4U 49: More on Class Attributes http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_49:_More_on_Class_Attributes&entry=3571377156 py4u Tue, 04 Mar 2014 09:12:36 GMT

Today's Python 4 You continues with class attributes in Python. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:

Attributes

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]]> 3571377156 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3571377156 http://www.jarober.com/blog/blogView?guid=3571377156 no James Robertson PY 4U 49: More on Class Attributes In Python, you can add class attributes anytime after instantiating an instance - they don't need to be declared in the class definition 1:58 python, class, attribute nonadult James Robertson PY 4U 49: More on Class Attributes http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3571377156 PY 4U 48: Initializing a Python Object http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_48:_Initializing_a_Python_Object&entry=3570944032 py4u Thu, 27 Feb 2014 08:53:52 GMT

Today's Python 4 You looks at how you customize the initialization of a new instance in Python. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:

Object Initialization

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]]> 3570944032 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3570944032 http://www.jarober.com/blog/blogView?guid=3570944032 http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_48:_Initializing_a_Python_Object&entry=3570944032 http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_48:_Initializing_a_Python_Object&entry=3570944032 peter 2014-02-28T07:45:01-05:00 <div xmlns="http://www.w3.org/1999/xhtml"> <p>It took me a while to get my head around Python objects -and I hadn't been spoiled by the pleasures of Smalltalk!</p><p>1. You certainly DON'T need to bind methods to variables before you call them. That would be horrible!</p><p>your code</p><p>func = cls.world</p><p>print(func())</p><p>..does the same thing as</p><p>print(cls.world())</p><p>[aside: imo your choice of the variable name cls is confusing (because you hold an instance not a class 'in' that variable called cls) but it isn't an error of course. ]</p><p> </p><p>2.</p><p>The line that reads..</p><p>i = 123</p><p>is also not an error -but I note that you refer to i (in the previous video) as an "instance variable". Actually it is a class variable. [whereas the variable called data *is* an instance variable -because it bound with self.data = ]</p><p>Eg. One might ask "what would happen if I also had i = 456 inside the __init__ method?" Answer: some_hello_instance.i would return 456 *but* the 123 would not have been mutated. Instead, you would have a class AND instance variable with the same name and the instance variable would have precedence. If you really wanted the class level i you could still refer to some_hello_instance.__class__.i [aside: Stylistically, I would move i = 123 up so it was directly under the class statement to remind me it was a class variable]</p><p>I figure that Python looks like Java but works more like Smalltalk. When a java-head looks at a Python class they *think* they are looking at a declaration, but they are not. class is just a statement that runs at "import time".</p><p>I'm guessing that Python classes would make a bit more sense to a Smalltalker because you are used to the idea that a class is an object that is created by the execution of code. The difference of course is that "Smalltalk don't need no stinkin 'import time'" (and a Pythonista would say "we don't need no stinkin image" :-> )</p><p>I guess you could say that Python builds an image on the fly whenever you run (or import) code. If only the Python IDE's worked with this image, instead of slavishly pretending to be static language tools! </p><p>Whoa, you got me monologuing there!</p><p>Looking forward to you doing "Smalltalk 4 U Pythonistas" some day :-)</p><p> </p> </div> Re: PY 4U 48: Initializing a Python Object no James Robertson PY 4U 48: Initializing a Python Object In Python, you can customize how your classes instantiate with the __init__ function 1:36 python, class nonadult James Robertson PY 4U 48: Initializing a Python Object http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3570944032 PY 4U 47: Introducing Classes http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_47:_Introducing_Classes&entry=3570776410 py4u Tue, 25 Feb 2014 10:20:10 GMT

Today's Python 4 You starts looking at classes in Python. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:

Classes

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]]> 3570776410 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3570776410 http://www.jarober.com/blog/blogView?guid=3570776410 no James Robertson PY 4U 47: Introducing Classes Today we'll start looking at the OO aspects of python, starting with how you create and use a class 1:52 python, oo, class nonadult James Robertson PY 4U 47: Introducing Classes http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3570776410 PY 4U 46: Boolean Expressions http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_46:_Boolean_Expressions&entry=3570341509 py4u Thu, 20 Feb 2014 09:31:49 GMT

Today's Python 4 You starts looking at Boolean expressions in Python. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:

Boolean Expressions

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]]> 3570341509 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3570341509 http://www.jarober.com/blog/blogView?guid=3570341509 no James Robertson PY 4U 46: Boolean Expressions Today well take a look at boolean expressions in python 2:08 python, boolean nonadult James Robertson PY 4U 46: Boolean Expressions http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3570341509 PY 4U 45: Sorting and Modifying a Collection http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_45:_Sorting_and_Modifying_a_Collection&entry=3570169277 py4u Tue, 18 Feb 2014 09:41:17 GMT

Today's Python 4 You looks at collection sorting. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:

Collection Sorting

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]]> 3570169277 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3570169277 http://www.jarober.com/blog/blogView?guid=3570169277 no James Robertson PY 4U 45: Sorting and Modifying a Collection To modify a collection while looping over it, use a copy - we'll do that today with slicing. 1:19 python, looping, sorting nonadult James Robertson PY 4U 45: Sorting and Modifying a Collection http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3570169277 PY 4U 44: Iterating Over Two Sequences http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_44:_Iterating_Over_Two_Sequences&entry=3569732654 py4u Thu, 13 Feb 2014 08:24:14 GMT

Today's Python 4 You looks at iterating over two sequences. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:

Zipping Sequences

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]]> 3569732654 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3569732654 http://www.jarober.com/blog/blogView?guid=3569732654 no James Robertson PY 4U 44: Iterating Over Two Sequences Using the built in zip function to ceate a tuple, you can pretty easily iterate over the elements in two sequences in Python 1:24 python, iteration nonadult James Robertson PY 4U 44: Iterating Over Two Sequences http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3569732654 PY 4U 43: Dictionary Operations http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_43:_Dictionary_Operations&entry=3569562193 py4u Tue, 11 Feb 2014 09:03:13 GMT

Today's Python 4 You looks into Dictionary operations. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:

Dictionary Operations

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]]> 3569562193 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3569562193 http://www.jarober.com/blog/blogView?guid=3569562193 no James Robertson PY 4U 43: Dictionary Operations Today we'll look at some of the more immediately useful library functions for dictionaries in Python 1:20 python, dictionary nonadult James Robertson PY 4U 43: Dictionary Operations http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3569562193 PY 4U 42: Iterating Dictionaries http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_42:_Iterating_Dictionaries&entry=3569127163 py4u Thu, 06 Feb 2014 08:12:43 GMT

Today's Python 4 You covers iteration of Dictionaries. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:

Dictionary Iteration

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]]> 3569127163 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3569127163 http://www.jarober.com/blog/blogView?guid=3569127163 no James Robertson PY 4U 42: Iterating Dictionaries Today we'll have a look at how you can iterate over the keys and values in a dictionary in Python 1:05 python, dictionary nonadult James Robertson PY 4U 42: Iterating Dictionaries http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3569127163 PY 4U 41: Dictionary Comprehensions http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_41:_Dictionary_Comprehensions&entry=3568952621 py4u Tue, 04 Feb 2014 07:43:41 GMT

Today's Python 4 You looks ta dictionary comprehensions. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:

Dictionary Comprehensions

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]]> 3568952621 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3568952621 http://www.jarober.com/blog/blogView?guid=3568952621 no James Robertson PY 4U 41: Dictionary Comprehensions You can construct dictionaries in Python with comprehensions, just like other collections 1:40 python, dictionary, comprehension nonadult James Robertson PY 4U 41: Dictionary Comprehensions http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3568952621 PY 4U 40: Dictionaries http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_40:_Dictionaries&entry=3568520147 py4u Thu, 30 Jan 2014 07:35:47 GMT

Today's Python 4 You looks at Dictionaries. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:

Dictionaries

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]]> 3568520147 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3568520147 http://www.jarober.com/blog/blogView?guid=3568520147 no James Robertson PY 4U 40: Dictionaries Today we'll take a look at Dictionaries in Python, starting with creation - both via direct syntax and the dict() constructor 1:41 python, dictionary nonadult James Robertson PY 4U 40: Dictionaries http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3568520147 PY 4U 39: Tuples http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_39:_Tuples&entry=3568346714 py4u Tue, 28 Jan 2014 07:25:14 GMT

Today's Python 4 You goes deeper into tuples, including "unpacking" them. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:

Tuples

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]]> 3568346714 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3568346714 http://www.jarober.com/blog/blogView?guid=3568346714 no James Robertson PY 4U 39: Tuples Today we'll take a look at some of the things you can do with tuples - setting up empty or one element tuples requires some special syntax, and there's also syntax for "unpacking" a tuple into individual variables 1:27 python tuples nonadult James Robertson PY 4U 39: Tuples http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3568346714 PY 4U 38: Lists and Tuples http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_38:_Lists_and_Tuples&entry=3567919790 py4u Thu, 23 Jan 2014 08:49:50 GMT

Today's Python 4 You compares lists and tuples. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:

Lists and Tuples

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]]> 3567919790 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3567919790 http://www.jarober.com/blog/blogView?guid=3567919790 no James Robertson PY 4U 38: Lists and Tuples Today we'll start looking at Tuples in Python, and how they differ from lists 1:20 python, tuples nonadult James Robertson PY 4U 38: Lists and Tuples http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3567919790 PY 4U 37: Stacks and Queues http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_37:_Stacks_and_Queues&entry=3567763265 py4u Tue, 21 Jan 2014 13:21:05 GMT

Today's Python 4 You looks at Stacks and Queues using Python collections. For more documentation on this, you should visit the Python documentation pages. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:

Installing (Mac)

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]]> 3567763265 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3567763265 http://www.jarober.com/blog/blogView?guid=3567763265 no James Robertson PY 4U 37: Stacks and Queues Today we'll have a look at using Lists for stack and queue operations in Python. 1:57 python, list, stack, queue nonadult James Robertson PY 4U 37: Stacks and Queues http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3567763265 PY 4U 36: Set Comprehensions http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_36:_Set_Comprehensions&entry=3567323778 py4u Thu, 16 Jan 2014 11:16:18 GMT

Today's Python 4 You looks at comprehensions in Python for Sets. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:

Set Comprehensions

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]]> 3567323778 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3567323778 http://www.jarober.com/blog/blogView?guid=3567323778 no James Robertson PY 4U 36: Set Comprehensions Sets also support comprehensions (just like lists). Today we'll give a basic example 1:07 python, set, comprehension nonadult James Robertson PY 4U 36: Set Comprehensions http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3567323778 PY 4U 35: Sets in Python http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_35:_Sets_in_Python&entry=3567144568 py4u Tue, 14 Jan 2014 09:29:28 GMT

Today's Python 4 You looks at Sets (collections that only hold unique items). If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:

Sets

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]]> 3567144568 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3567144568 http://www.jarober.com/blog/blogView?guid=3567144568 no James Robertson PY 4U 35: Sets in Python Sets are another type of collection in Python - unordered, with no duplicate items allowed 0:48 python, collection, set nonadult James Robertson PY 4U 35: Sets in Python http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3567144568 PY 4U 34: Removing From Lists http://www.jarober.com/blog/blogView?showComments=true&printTitle=PY_4U_34:_Removing_From_Lists&entry=3566712355 py4u Thu, 09 Jan 2014 09:25:55 GMT

Today's Python 4 You looks at deleting items from Lists. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:

Deleting from Lists

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]]> 3566712355 http://www.jarober.com/blog/servlet/CommentAPIPBServlet?guid=3566712355 http://www.jarober.com/blog/blogView?guid=3566712355 no James Robertson PY 4U 34: Removing From Lists Today we'll go back to lists, and look at a couple of different ways that you can remove things from them 2:01 python, lists nonadult James Robertson PY 4U 34: Removing From Lists http://www.jarober.com/blog/servlet/CommentAPIServlet?guid=3566712355