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How does Python manage int and long?
...int contains the maximum value a Python int can hold.
On a 64-bit Python 2.7, the size is 24 bytes. Check with sys.getsizeof().
Python 3: sys.maxsize contains the maximum size in bytes a Python int can be.
This will be gigabytes in 32 bits, and exabytes in 64 bits.
Such a large int would have a...
Permanently add a directory to PYTHONPATH?
... -m site --user-site
For some reason this doesn't seem to work in Python 2.7. There you can use:
python -c 'import site; site._script()' --user-site
Then create a .pth file in that directory containing the path you want to add (create the directory if it doesn't exist).
For example:
# find di...
How to print without newline or space?
...sh=True keyword argument:
print('.', end='', flush=True)
Python 2.6 and 2.7
From Python 2.6 you can either import the print function from Python 3 using the __future__ module:
from __future__ import print_function
which allows you to use the Python 3 solution above.
However, note that the fl...
UnicodeDecodeError: 'ascii' codec can't decode byte 0xd1 in position 2: ordinal not in range(128)
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It works for my Python 2.7, note, reload(sys) is needed, otherwise, setdefaultencoding would not be accessible.
– Yu Shen
Apr 16 '18 at 17:00
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Insert an element at a specific index in a list and return the updated list
...t(range(1000))" "b = a.copy(); b[500:500] = (3,)"
100000 loops, best of 5: 2.76 µsec per loop
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Center a popup window on screen?
... Nice and simple solution. In my case it looked better with "outerHeight / 2.7" instead of "outerHeight / 2". Another thing: The parameter name "title" is misleading. It is the name of the window, so winName or so is better and to the point.
– Magnus
Aug 20 at ...
Creating a dictionary from a csv file?
...ict = {rows[0]:rows[1] for rows in reader}
Alternately, for python <= 2.7.1, you want:
mydict = dict((rows[0],rows[1]) for rows in reader)
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Better way to shuffle two numpy arrays in unison
...ginal function: my original takes ~1.8s for 10 iterations, and this takes ~2.7s. Both numbers are quite consistent. The dataset I used to test has a.shape is (31925, 405) and b.shape is (31925,).
– Josh Bleecher Snyder
Jan 5 '11 at 17:46
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Add params to given URL in Python
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@florian : At least in python 2.7 you then need to call urlencode as urllib.urlencode(query, doseq=True). Otherwise, parameters that existed in the original url are not preserved correctly (because they are returned as tuples from @parse_qs@
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How to calculate the time interval between two time strings
...g (did my command take more than 2.5 seconds to execute?) and it works in v2.7
– Mawg says reinstate Monica
Jul 5 '16 at 10:09
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