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How to implement an ordered, default dict? [duplicate]
... def __init__(self, default_factory=None, *args, **kwargs):
#in python3 you can omit the args to super
super(OrderedDefaultDict, self).__init__(*args, **kwargs)
self.default_factory = default_factory
If you check out the class's MRO (aka, help(OrderedDefaultDict)), you'l...
What does “SyntaxError: Missing parentheses in call to 'print'” mean in Python?
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Didn't work for me in Python3 even with that import. Code is without parentheses.
– logicbloke
Mar 4 at 7:51
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How can I add the sqlite3 module to Python?
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if your python3 is built from source manually , and meet this error, you should install sqlite-devel package first, then rebuild python3.
– ngn999
Mar 28 '16 at 1:28
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Add up a column of numbers at the Unix shell
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python3 -c"import os; print(sum(os.path.getsize(f) for f in open('files.txt').read().split()))"
Or if you just want to sum the numbers, pipe into:
python3 -c"import sys; print(sum(int(x) for x in sys.stdin))"
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Print string to text file
...TotalAmount))
For python2.7 and higher you can use {} instead of {0}
In Python3, there is an optional file parameter to the print function
with open("Output.txt", "w") as text_file:
print("Purchase Amount: {}".format(TotalAmount), file=text_file)
Python3.6 introduced f-strings for another ...
Python: Get relative path from comparing two absolute paths
...' - it means that the second path is not descendant of the first path.
In Python3 you can use PurePath.relative_to:
Python 3.5.1 (default, Jan 22 2016, 08:54:32)
>>> from pathlib import Path
>>> Path('/usr/var/log').relative_to('/usr/var/log/')
PosixPath('.')
>>> Path(...
Failed to install Python Cryptography package with PIP and setup.py
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Don't forget to replace python-dev with python3-dev if you are using python3
– duan
Feb 28 '17 at 1:45
1
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How do I add tab completion to the Python shell?
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It looks like python3 has it out-of box!
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How can I pass a list as a command-line argument with argparse?
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Example: temp_args1.py
Please Note: The below sample code is written in python3. By changing the print statement format, can run in python2
#!/usr/local/bin/python3.6
from argparse import ArgumentParser
description = 'testing for passing multiple arguments and to get list of args'
parser = Arg...