Kristian Rother: Created page with "{{Cat|Python Reference}} {{Python Links}} == Essentials == * All program files should have the extension .py * When developing on Unix, the fi..."

2013-02-07T23:55:58Z

Created page with "{{Cat|Python Reference}} {{Python Links}} == Essentials == * All program files should have the extension <source lang="python">.py </source> * When developing on Unix, the fi..."

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{{Cat|Python Reference}}
{{Python Links}}

== Essentials ==
* All program files should have the extension <source lang="python">.py </source>
* When developing on Unix, the first line in each Python program should be:

<source lang="python">
#!/usr/bin env python
</source>

* Indentation is a central element of Python syntax, marking code blocks. Code blocks should be indented by four spaces/one tab.
* Indentation must not be used for decorative purposes.

Only one command per line is allowed.

== What Python does not have ==
* Memory allocation.
* Declaration of variables and types.
* Strict object-orientation.
* Line numbers.
== Commenting code ==
* In Python, single lines can be commented by the hash symbol:
<source lang="python">
# this is a comment.

print a + b # adding the variables.
</source>
* Also, multi-line comments can be enclosed by triple quotes:
<source lang="python">
”””
This is some longer descriptions
that stretches over multiple lines.
”””
</source>
* The triple quoted comments can be used to generate documentation automatically.

Writing Python Programs - Revision history

Kristian Rother: Created page with "{{Cat|Python Reference}} {{Python Links}} == Essentials == * All program files should have the extension .py * When developing on Unix, the fi..."