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How do I detect whether a Python variable is a function?
I have a variable, x , and I want to know whether it is pointing to a function or not.
25 Answers
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Progress indicator during pandas operations
...with `pandas`
# (can use tqdm_gui, optional kwargs, etc.)
tqdm.pandas()
# Now you can use `progress_apply` instead of `apply`
df.groupby(0).progress_apply(lambda x: x**2)
In case you're interested in how this works (and how to modify it for your own callbacks), see the examples on github, the full...
“Incorrect string value” when trying to insert UTF-8 into MySQL via JDBC?
... still not write international text into db getting same failure as above
Now using this how-to-convert-an-entire-mysql-database-characterset-and-collation-to-utf-8
Update all your db to use utf8mb4
ALTER DATABASE YOURDB CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
Run this query that giv...
Why aren't superclass __init__ methods automatically invoked?
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Right now, we have a rather long page describing the method resolution order in case of multiple inheritance: http://www.python.org/download/releases/2.3/mro/
If constructors were called automatically, you'd need another page of a...
How do you add a Dictionary of items into another Dictionary
...alue(value, forKey:key)
}
}
}
dict1.update(dict2)
// dict1 is now ["a" : "foo", "b" : "bar]
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How to len(generator()) [duplicate]
...'s no "infinity" integer in Python. And what about generators that don't know when they'll be done? To write an efficient __len__ method for a Goldbach's Conjecture generator, you'd first have to answer one of the biggest open questions in mathematics.
– Kevin J. Chase
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How to declare string constants in JavaScript? [duplicate]
...t serves a similar purpose
FOO : "foofoo",
BAR : "barbar",
}
You can now print out 'foofoo' with
jsEnum.FOO
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Simplest way to detect a mobile device in PHP
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this answer is now so obsolete. there are many false positives, safari on OSX is detected as a mobile, Chrome on OSX detected as Mobile.
– DevZer0
May 25 '16 at 14:21
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How to override the copy/deepcopy operations for a Python object?
...se where pickling and copying need to be different. In fact, I don't even know why copy tries to use the pickling protocol by default. Copying is for in-memory manipulation, pickling is for cross-epoch persistence; they are completely different things that bear little relation to each other.
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How to concatenate twice with the C preprocessor and expand a macro as in “arg ## _ ## MACRO”?
...then substituted into the replacement string:
EVALUATOR(mine, VARIABLE)
Now the macro EVALUATOR is discovered, and the arguments are isolated as 'mine' and 'VARIABLE'; the latter is then fully expanded to '3', and substituted into the replacement string:
PASTER(mine, 3)
The operation of this i...