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[DOCX File]error handling; pandas and data analysis
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“Wrapping” your code in a try: clause will allow you to specify what to do in this case. pass is a special Python statement called a “null operation” or a “no-op”; it does nothing except keep going. try: x= math.sqrt(-1)except: pass## keep going (but x will not be set) You can specify something you want to do with only a particular ...
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[DOC File]Python 4
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Containers may inherit variables from other containers, prototypes and instances. Conflicts are resolved using Python's MRO (Method Resolution Order). d = __inherit__( x, window1, c ) Note 1: This is a little-used function. Inheritance is primarily used with prototypes. We will use a special syntax for that. Note 2: Inherited variables are not ...
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[DOCX File]Python Part IV - Storing Multiple Values in Lists
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Since lists can contain any Python variable, it can even contain other lists. For example, we could represent the products in the shelves of a small grocery shop, and we could then use an indexing method (starting with 0 as usual in Python) to extract any sub-list in various ways.
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[DOC File]Teaching Notes for Object Oriented Programming
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Learning Python, 2nd ed. is the best introductory text, suitable for a one-semester course, but it is too long for a busy engineer. The key concepts are too diffuse. The core presentation could be much shorter, with exercises and examples keyed to specific parts of the text.
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[DOCX File]Python Part II - Analyzing Patient Data
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dir(data) Some attributes are not useful to the human eye, but a few maybe. Data type. From the list obtained with dir we can ask what type of information contained within data by using the dtype attribute: ... The “dot operator” to access object properties is a widely used method in Python. Data shape.
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[DOC File]Prototypes - University of Arizona
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The dir(cat1) function shows all variables that are available to the cat1 instance, including inherited variables and system variables. ... Method resolution order ... Shortcuts for simple programs *** syntax needs revision *** ... After much discussion on comp.lang.python and the Prothon mailing list, I am persuaded that the benefits of ...
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[DOC File]Prototypes - University of Arizona
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In addition to the dir() function and __dict__ attributes, there are several other ”interrogation techniques" you might find handy when you are trying to figure out what is going on "behind the scenes" with a Python class, instance, or any type of object. dir(obj) returns a sorted list of all attributes of an object.
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Python dir method