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Calling a Method From a String With the Method's Name in Ruby
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237
To call functions directly on an object
a = [2, 2, 3]
a.send("length")
# or
a.public_send("len...
How to pad zeroes to a string?
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Strings:
>>> n = '4'
>>> print(n.zfill(3))
004
And for numbers:
>>> n = 4
>>> print(f'{n:03}') # Preferred method, python >= 3.6
004
>>> print('%03d' % n)
004
>>> print(format(n, '03')) # python >= 2.6
004
>>> ...
Printing tuple with string formatting in Python
So, i have this problem.
I got tuple (1,2,3) which i should print with string formatting.
eg.
14 Answers
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How do I compare version numbers in Python?
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386
Use packaging.version.parse.
>>> from packaging import version
>>> version....
Delete rows from a pandas DataFrame based on a conditional expression involving len(string) giving K
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answered Dec 13 '12 at 1:37
BrenBarnBrenBarn
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How to plot two histograms together in R?
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JohnJohn
21.3k33 gold badges4747 silver badges7979 bronze badges
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How do I detect the Python version at runtime? [duplicate]
I have a Python file which might have to support Python versions < 3.x and >= 3.x. Is there a way to introspect the Python runtime to know the version which it is running (for example, 2.6 or 3.2.x )?
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Getting individual colors from a color map in matplotlib
...ap('Spectral')
rgba = cmap(0.5)
print(rgba) # (0.99807766255210428, 0.99923106502084169, 0.74602077638401709, 1.0)
For values outside of the range [0.0, 1.0] it will return the under and over colour (respectively). This, by default, is the minimum and maximum colour within the range (so 0.0 and 1...
What does the caret operator (^) in Python do?
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&gt;&gt;&gt; 0^1
1
To explain one of your own examples:
&gt;&gt;&gt; 8^3
11
Think about it this way:
1000 # 8 (binary)
0011 # 3 (binary)
---- # APPLY XOR ('vertically')
1011 # result = 11 (binary)
share
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How to find index of list item in Swift?
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831
As swift is in some regards more functional than object-oriented (and Arrays are structs, not o...