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How to implement an ordered, default dict? [duplicate]
... @martineau: You're right. I believe callable was removed in Python 3.1 and then reinstated in Python 3.2, and I hadn't upgraded yet when I made this edit. Feel free to make the change.
– Neil G
Jun 17 '12 at 17:45
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Convert int to ASCII and back in Python
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ASCII to int:
ord('a')
gives 97
And back to a string:
in Python2: str(unichr(97))
in Python3: chr(97)
gives 'a'
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Search and replace a line in a file in Python
...ue):
print('{} {}'.format(fileinput.filelineno(), line), end='') # for Python 3
# print "%d: %s" % (fileinput.filelineno(), line), # for Python 2
What happens here is:
The original file is moved to a backup file
The standard output is redirected to the original file within the loop
Thus ...
What is the difference between '>' and a space in CSS selectors?
... answered Apr 14 '10 at 9:54
René NyffeneggerRené Nyffenegger
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Which exception should I raise on bad/illegal argument combinations in Python?
...g about the best practices for indicating invalid argument combinations in Python. I've come across a few situations where you have a function like so:
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Find object in list that has attribute equal to some value (that meets any condition)
...t("i found it!")
break
The naive loop-break version, is perfectly Pythonic -- it's concise, clear, and efficient. To make it match the behavior of the one-liner:
for x in test_list:
if x.value == value:
print("i found it!")
break
else:
x = None
This will assign None...
Printing tuple with string formatting in Python
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In Python 3 print is a function, not a statement, so you have to write print(....).
– J.G.
May 16 at 17:09
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Python: Find in list
...exactly equivalent to
matches = filter(fulfills_some_condition, lst)
in Python 2. Here you can see higher-order functions at work. In Python 3, filter doesn't return a list, but a generator-like object.
Finding the first occurrence
If you only want the first thing that matches a condition (but ...
Python loop that also accesses previous and next values
... accessing the previous, current, and next items? Like this C/C++ code, in Python?
14 Answers
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Is a Python list guaranteed to have its elements stay in the order they are inserted in?
If I have the following Python code
6 Answers
6
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