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Counting the Number of keywords in a dictionary in python
...Some modifications were made on posted answer UnderWaterKremlin to make it python3 proof. A surprising result below as answer.
System specs:
python =3.7.4,
conda = 4.8.0
3.6Ghz, 8 core, 16gb.
import timeit
d = {x: x**2 for x in range(1000)}
#print (d)
print (len(d))
# 1000
print (len(d.keys()...
Pythonic way of checking if a condition holds for any element of a list
I have a list in Python, and I want to check if any elements are negative. Specman has the has() method for lists which does:
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Python memoising/deferred lookup property decorator
...posed in other answers since (ref 1and 2). Seems this is a popular one in Python web frameworks (derivatives exist in Pyramid and Werkzeug).
– André Caron
Dec 5 '13 at 11:20
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How to remove the left part of a string?
I have some simple python code that searches files for a string e.g. path=c:\path , where the c:\path part may vary. The current code is:
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scipy.misc module has no attribute imread?
...Scipy all are downloaded from university of California at Irvine compiled python modules for windows.
– SIslam
Nov 18 '16 at 10:17
4
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How to print a date in a regular format?
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The WHY: dates are objects
In Python, dates are objects. Therefore, when you manipulate them, you manipulate objects, not strings or timestamps.
Any object in Python has TWO string representations:
The regular representation that is used by print can be ...
Where does PostgreSQL store the database?
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As suggested in "PostgreSQL database default location on Linux", under Linux you can find out using the following command:
ps aux | grep postgres | grep -- -D
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How can I mock requests and the response?
I am trying to use Pythons mock package to mock Pythons requests module. What are the basic calls to get me working in below scenario?
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How to count the number of true elements in a NumPy bool array
... count the number of elements whose values are True . Is there a NumPy or Python routine dedicated for this task? Or, do I need to iterate over the elements in my script?
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Simpler way to create dictionary of separate variables?
...e to be able to get the name of a variable as a string but I don't know if Python has that much introspection capabilities. Something like:
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