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Python division
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In Python 2.7, the / operator is an integer division if inputs are integers:
>>>20/15
1
>>>20.0/15.0
1.33333333333
>>>20.0/15
1.33333333333
In Python 3.3, the / operator is a float division even if the i...
Check if a given key already exists in a dictionary
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Wanted to share that (using Python 2.7) the run time of something I just wrote, basing heavily on dicts, was 363.235070 using "key in dict.keys()" and drastically went down to 0.260186 solely by removing the call for "keys()"
– Ido_f
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About catching ANY exception
...://docs.python.org/3.5/library/exceptions.html#exception-hierarchy
Python 2.7:
https://docs.python.org/2.7/library/exceptions.html#exception-hierarchy
try:
something()
except BaseException as error:
print('An exception occurred: {}'.format(error))
But as other people mentioned, you would...
How do I make python wait for a pressed key?
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I'm getting this error when I try to do this in Python 2.7: "SyntaxError: unexpected EOF while parsing"
– Jon Tirsen
Sep 17 '14 at 7:11
8
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How to install 2 Anacondas (Python 2 and 3) on Mac OS
...eparated environments. The easiest way to create an environment for Python 2.7 is to do
conda create -n python2 python=2.7 anaconda
This will create an environment named python2 that contains the Python 2.7 version of Anaconda. You can activate this environment with
source activate python2
Th...
How do I install Python OpenCV through Conda?
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This worked fine with Anaconda 2.7 on Win10 64bit, whereas conda install opencv did not.
– Anton Schwaighofer
Apr 18 '16 at 12:34
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Convert Python program to C/C++ code? [closed]
... for the Python interpreter and compiles every construct that CPython 2.6, 2.7, 3.2 and 3.3 offer. It translates the Python into a C++ program that then uses "libpython" to execute in the same way as CPython does, in a very compatible way."
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How to count the frequency of the elements in an unordered list?
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In Python 2.7 (or newer), you can use collections.Counter:
import collections
a = [1,1,1,1,2,2,2,2,3,3,4,5,5]
counter=collections.Counter(a)
print(counter)
# Counter({1: 4, 2: 4, 3: 2, 5: 2, 4: 1})
print(counter.values())
# [4, 4, 2, ...
Removing numbers from string [closed]
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In Python 2.7 and above, you don't need the brackets around the list comprehension. You can leave them out and it becomes a generator expression.
– Kirk Strauser
Oct 12 '12 at 3:38
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What is the ideal data type to use when storing latitude / longitude in a MySQL database?
... 7 16 m 52 ft Houses/Businesses
MEDIUMINT scaled 6 2.7 m 8.8 ft
FLOAT 8 1.7 m 5.6 ft
DECIMAL(8,6)/(9,6) 9 16cm 1/2 ft Friends in a mall
Deg*10000000 (INT) 8 16mm 5/8 in Marbles
DOUBLE 16 3.5nm ...