Pszlachta1 at 07:56, 2 June 2025

2025-06-02T07:56:18Z

← Older revision		Revision as of 07:56, 2 June 2025
Line 5:		Line 5:
	The time module offers functions for getting the current time and date.		The time module offers functions for getting the current time and date.

	~~<source~~ lang="python">		syntaxhighlight lang="python">
	import time		import time
	s = time.asctime() # as string		s = time.asctime() # as string
	i = time.time() # as float		i = time.time() # as float
	</~~source~~>		</syntaxhighlight>

	== Accessing web pages ==		== Accessing web pages ==
	The HTML code of web pages and downloadable files from the web can be accessed in a similar way as reading files:		The HTML code of web pages and downloadable files from the web can be accessed in a similar way as reading files:

	<~~source~~ lang="python">		<syntaxhighlight lang="python">
	import urllib		import urllib
	url = 'http://www.google.com'		url = 'http://www.google.com'
	page = urllib.urlopen(url)		page = urllib.urlopen(url)
	print page.read()		print page.read()
	</~~source~~>		</syntaxhighlight>

	== Finding out what is in a module ==		== Finding out what is in a module ==
	The contents of any module can be examined with:		The contents of any module can be examined with:

	<~~source lang~~="python">		<syntaxhighlightlang="python">
	print dir( name_of_module )		print dir( name_of_module )
	help( name_of_module )		help( name_of_module )
	</~~source~~>		</syntaxhighlight>

	== Creating plots ==		== Creating plots ==
	The Matplotlib library contains a wide range of possibilities for creating graphs. See the 'gallery' link on http://matplotlib.sourceforge.net for examples. It needs to be installed separately.		The Matplotlib library contains a wide range of possibilities for creating graphs. See the 'gallery' link on http://matplotlib.sourceforge.net for examples. It needs to be installed separately.

	<~~source~~ lang="python">		<syntaxhighlight lang="python">
	from pylab import *		from pylab import *
	</~~source~~>		</syntaxhighlight>

	== Database access ==		== Database access ==
	Numpy is a library that allows operating on arrays and matrices. It needs to be installed separately. See: http://numpy.scipy.org		Numpy is a library that allows operating on arrays and matrices. It needs to be installed separately. See: http://numpy.scipy.org

	<~~source~~ lang="python">		<syntaxhighlight lang="python">
	import numpy		import numpy
	a = numpy.array( [1,2,3,4,5,6] )		a = numpy.array( [1,2,3,4,5,6] )
	print a+10, a*a		print a+10, a*a
	</~~source~~>		</syntaxhighlight>

	== Image manipulation ==		== Image manipulation ==
	The Python Imaging Library PIL is a powerful tool for working with images (changing formats, resizing, cutting, drawing). It needs to be installed separately. See http://www.pythonware.com/products/pil .		The Python Imaging Library PIL is a powerful tool for working with images (changing formats, resizing, cutting, drawing). It needs to be installed separately. See http://www.pythonware.com/products/pil .

Kristian Rother: /* Getting the current time and date */

2013-02-05T20:37:03Z

Getting the current time and date

New page

{{Cat|Python Commands}}
{{Python Links}}

== Getting the current time and date ==
The time module offers functions for getting the current time and date.

<source lang="python">
import time
s = time.asctime() # as string
i = time.time() # as float
</source>

== Accessing web pages ==
The HTML code of web pages and downloadable files from the web can be accessed in a similar way as reading files:

<source lang="python">
import urllib
url = 'http://www.google.com'
page = urllib.urlopen(url)
print page.read()
</source>

== Finding out what is in a module ==
The contents of any module can be examined with:

<source lang="python">
print dir( name_of_module )
help( name_of_module )
</source>

== Creating plots ==
The Matplotlib library contains a wide range of possibilities for creating graphs. See the 'gallery' link on http://matplotlib.sourceforge.net for examples. It needs to be installed separately.

<source lang="python">
from pylab import *
</source>

== Database access ==
Numpy is a library that allows operating on arrays and matrices. It needs to be installed separately. See: http://numpy.scipy.org

<source lang="python">
import numpy
a = numpy.array( [1,2,3,4,5,6] )
print a+10, a*a
</source>

== Image manipulation ==
The Python Imaging Library PIL is a powerful tool for working with images (changing formats, resizing, cutting, drawing). It needs to be installed separately. See http://www.pythonware.com/products/pil .

Useful Python modules - Revision history

Pszlachta1 at 07:56, 2 June 2025

Kristian Rother: /* Getting the current time and date */