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--- notes:python_cheat_sheet [2026/06/05 15:47]
158.140.173.120 old revision restored (2009/04/24 17:37)
+++ notes:python_cheat_sheet [2026/06/07 13:59] (current)
150.5.134.52 old revision restored (2026/06/03 02:44)
@@ Line 4: / Line 4: @@
 [[http://www.python.org/ | Python]] is a dynamic object-oriented programming language with extensive standard libraries. These notes summarize the [[http://docs.python.org/3.0/tutorial/ | Python 3.0 tutorial]].
+===== The Interpreter =====
   * **python**/**python3.0** is the command-line interpreter with readline where available.
   * python -c command runs a single command.
-  * %%>>> prompts for a line . ... prompts for a continuation of a previous line.%%
+  * sys.argv is a list of strings with the script if any in sys.argv[0]
+  * >>> prompts for a line . ... prompts for a continuation of a previous line
   * PYTHONSTARTUP can point to a file of startup commands
   * Expressions are evaluated and printed.
   * The last printed expression is assigned to _ .
 ===== Basics =====
   * Comments start with # .
-  * sys.argv is a list of strings with the script if any in sys.argv[0]
   * Variables can be assigned (using = ) without being defined but must be assigned before being used.
   * a,b = c,d does a multiple assignment.
@@ Line 87: / Line 91: @@
 from fib import fib1, fib2
 </code>
-  * %%__name__%% is set to the name of the module or to %%__main__%% if called from the command line.
+  * <code python>__name__</code> is set to the name of the module or to <code python>__main__</code> if called from the command line.
   * The search list for modules is the variable sys.path initialized from the directory containing the input script (or the current directory), PYTHONPATH and the installation-dependent default.
   * When a module is imported, a byte-code version is stored to module.pyc which speeds up successive loads.
@@ Line 99: / Line 103: @@
   * str() returns a readable representations, repr() returns a canonical representation
   * Strings have several formatting methods.
-  * //formatstring.format(tuple)// is the [[http://docs.python.org/3.0/library/string.html#formatspec | new-style printf]] equivalent. The [[http://docs.python.org/3.0/library/stdtypes.html#old-string-formatting | old-style]] was //formatstring % (tuple)// which uses C-type format strings.
+  * [[ http://docs.python.org/3.0/library/string.html#formatspec | formatstring.format(tuple)]] is the printf equivalent. The old style was [[http://docs.python.org/3.0/library/stdtypes.html#old-string-formatting | formatstring % (tuple)]] which uses C-type format strings.
   * To open a file <code python> open('/tmp/workfile', 'w') </code>
-  * [[http://docs.python.org/3.0/library/stdtypes.html#file-objects | File methods]] include read, readline, write.
+  * File methods include read, readline, write.
-  * //pickle// contains [[http://docs.python.org/3.0/library/pickle.html | load and dump methods]] for serializing objects. Support should be added for new object types.
+  * //pickle// contains load and dump methods for serializing objects. Support should be added for new object types.

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