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Convert a list of characters into a string
... empty string to join all of the strings together with the empty string in between, like so:
>>> a = ['a', 'b', 'c', 'd']
>>> ''.join(a)
'abcd'
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Why does Popen.communicate() return b'hi\n' instead of 'hi'?
...an someone explain why the result I want, "hi", is preceded with a letter 'b' and followed with a newline?
4 Answers
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Run an OLS regression with Pandas Data Frame
I have a pandas data frame and I would like to able to predict the values of column A from the values in columns B and C. Here is a toy example:
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Regex - how to match everything except a particular pattern
...cular pattern? I'm faced with a situation where I have to match an (A and ~B) pattern.
8 Answers
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Java 8: Where is TriFunction (and kin) in java.util.function? Or what is the alternative?
I see java.util.function.BiFunction, so I can do this:
7 Answers
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Is there a way to iterate over a range of integers?
Go's range can iterate over maps and slices, but I was wondering if there is a way to iterate over a range of numbers, something like this:
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Set operations (union, intersection) on Swift array?
Are there any standard library calls I can use to either perform set operations on two arrays, or implement such logic myself (ideally as functionally and also efficiently as possible)?
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Print commit message of a given commit in git
I need a plumbing command to print the commit message of one given commit - nothing more, nothing less.
6 Answers
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Remap values in pandas column with a dict
I have a dictionary which looks like this: di = {1: "A", 2: "B"}
10 Answers
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What is the purpose of python's inner classes?
Python's inner/nested classes confuse me. Is there something that can't be accomplished without them? If so, what is that thing?
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