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Array to Hash Ruby
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360
a = ["item 1", "item 2", "item 3", "item 4"]
h = Hash[*a] # => { "item 1" => "item 2", "...
What's the u prefix in a Python string?
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You're right, see 3.1.3. Unicode Strings.
It's been the syntax since Python 2.0.
Python 3 made them redundant, as the default string type is Unicode. Versions 3.0 through 3.2 removed them, but they were re-added in 3.3+ for compatibility wi...
bash: pip: command not found
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531
Why not just do sudo easy_install pip or if this is for python 2.6 sudo easy_install-2.6 pip?
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Maven error: Could not find or load main class org.codehaus.plexus.classworlds.launcher.Launcher
I have installed a latest maven-3.0.4 on Windows 7 :
The installation details are as follows:
Installation Path :
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Preserving signatures of decorated functions
...))
return f(*args, **kwargs)
@args_as_ints
def funny_function(x, y, z=3):
"""Computes x*y + 2*z"""
return x*y + 2*z
print funny_function("3", 4.0, z="5")
# 22
help(funny_function)
# Help on function funny_function in module __main__:
#
# funny_function(x, y, z=3)
# Computes x*y + ...
How do I get a list of all the duplicate items using pandas in python?
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173
Method #1: print all rows where the ID is one of the IDs in duplicated:
>>> import pan...
How can I multiply all items in a list together with Python?
...t takes
a list of numbers and multiplies them together. Example:
[1,2,3,4,5,6] will give me 1*2*3*4*5*6 . I could really use your help.
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How to calculate the number of occurrence of a given character in each row of a column of strings?
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13 Answers
13
Active
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How to convert list of key-value tuples into dictionary?
...injagecko
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How does the bitwise complement operator (~ tilde) work?
Why is it that ~2 is equal to -3? How does ~ operator work?
15 Answers
15
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