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How to check if an object is a list or tuple (but not string)?
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In python 2 only (not python 3):
assert not isinstance(lst, basestring)
Is actually what you want, otherwise you'll miss out on a lot of things which act like lists, but aren't subclasses of list or tuple.
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Given a URL to a text file, what is the simplest way to read the contents of the text file?
In Python, when given the URL for a text file, what is the simplest way to access the contents off the text file and print the contents of the file out locally line-by-line without saving a local copy of the text file?
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What is the use of “assert” in Python?
...condition, and immediately trigger an error if the condition is false.
In Python, it's roughly equivalent to this:
if not condition:
raise AssertionError()
Try it in the Python shell:
>>> assert True # nothing happens
>>> assert False
Traceback (most recent call last):
F...
Code Golf - π day
... but it solves the problem in a weird-functional-XSLT-kind of way :)
<?xml version="1.0"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:msxsl="urn:schemas-microsoft-com:xslt" >
<xsl:output method="html"/>
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Connecting to remote URL which requires authentication using Java
...sult, or call a method variant that does not produce chunked output. javax.xml.bind.DatatypeConverter seems safer.
– Jesse Glick
May 9 '13 at 15:00
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Copy file or directories recursively in Python
Python seems to have functions for copying files (e.g. shutil.copy ) and functions for copying directories (e.g. shutil.copytree ) but I haven't found any function that handles both. Sure, it's trivial to check whether you want to copy a file or a directory, but it seems like a strange omission.
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How to define a two-dimensional array?
...ou have to first initialize the outer list with lists before adding items; Python calls this
"list comprehension".
# Creates a list containing 5 lists, each of 8 items, all set to 0
w, h = 8, 5;
Matrix = [[0 for x in range(w)] for y in range(h)]
You can now add items to the list:
Matrix[0][0] =...
Check to see if python script is running
I have a python daemon running as a part of my web app/ How can I quickly check (using python) if my daemon is running and, if not, launch it?
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Dictionaries and default values
Assuming connectionDetails is a Python dictionary, what's the best, most elegant, most "pythonic" way of refactoring code like this?
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Iterating Over Dictionary Key Values Corresponding to List in Python
Working in Python 2.7. I have a dictionary with team names as the keys and the amount of runs scored and allowed for each team as the value list:
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