Download Python pocket reference by Lutz M. PDF

By Lutz M.

ISBN-10: 0596158084

ISBN-13: 9780596158088

This is often the ebook to arrive for if you end up coding at the fly and want a solution now. it really is an easy-to-use connection with the center language, with descriptions of universal modules and toolkits, and a advisor to fresh alterations, new good points, and upgraded built-ins -- all up to date to hide Python 3.X in addition to model 2.6. you are going to additionally fast locate precisely what you wish with the convenient index.Written by means of Mark Lutz -- well known because the world's major Python coach -- Python Pocket Reference, Fourth variation, is the suitable significant other to O'Reilly's vintage Python tutorials, additionally written by means of Mark: studying Python and Programming Python. integrated item kinds, together with numbers, lists, dictionaries, and extra Statements and syntax for growing and processing items features and modules for structuring and reusing code Python's object-oriented programming instruments The exception-handling version integrated capabilities, exceptions, and attributes specified operator overloading equipment regularly occurring normal library modules and extensions Command-line recommendations and improvement instruments Python idioms and tricks

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String formatting expression String formatting expressions replace % targets in the string on the left of the % operator, with values on the right (similar to C’s sprintf). If more than one value is to be replaced, they must be coded as a tuple to the right of the % operator. If just one item is to be replaced, it can be coded as a single value or oneitem tuple on the right (nest tuples to format a tuple itself). ; and typecode is a character from Table 8. Both width and precision can be coded as a * to force their values to be taken from the next item in the values to the right of the % operator when sizes are not known until runtime.

Expandtabs([tabsize]) Replaces tabs in string s with tabsize spaces (default is 8). strip([chars]) Removes leading and trailing whitespace from string s (or characters in chars if passed). lstrip([chars]) Removes leading whitespace from string s (or characters in chars if passed). rstrip([chars]) Removes trailing whitespace from string s (or characters in chars if passed). swapcase() Converts all lowercase letters to uppercase, and vice versa. upper() Converts all letters to uppercase. lower() Converts all letters to lowercase.

The traditional \xHH escape sequence can also be used, and octal escapes can be used for characters up to +01FF, which is represented by \777. Specific Built-in Types | 35 Like normal strings, all immutable sequence operations apply to unicode. , the result of 'a' + u'bc' is u'abc'). S. ASCII data (and raise an error for non-ASCII characters). The built-in str() and unicode() functions can be used to convert between normal and Unicode strings. The encode string method applies a desired encoding scheme to Unicode strings.

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