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what is the most efficient way of counting occurrences in pandas?
I have a large (about 12M rows) dataframe df with say:
3 Answers
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How to write string literals in python without having to escape them?
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127
Raw string literals:
>>> r'abc\dev\t'
'abc\\dev\\t'
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When to use the brace-enclosed initializer?
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answered Apr 2 '12 at 13:38
celtschkceltschk
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What is the difference between git am and git apply?
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edited Jun 26 '18 at 14:14
Maximo Mussini
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answered ...
Re-raise exception with a different type and message, preserving existing information
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Python 3 introduced exception chaining (as described in PEP 3134). This allows, when raising a...
Useful example of a shutdown hook in Java?
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2 Answers
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Using .sort with PyMongo
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207
sort should be a list of key-direction pairs, that is
db.test.find({"number": {"$gt": 1}}).so...
Get “Internal error in the expression evaluator” on “Add watch” function when trying to debug WCF se
Few days ago I moved my solution to MSVS 2013. It works fine except one thing: when I trying to debug code of my WCF service it works, but when I want to watch state of any variable it says: "Internal error in the expression evaluator". Add watch function works normal on client side, but in service...
Rebasing a Git merge commit
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edited Sep 18 at 16:22
Joshua Goldberg
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answ...