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Does pandas iterrows have performance issues?
...der of precedence for performance of various operations:
1) vectorization
2) using a custom cython routine
3) apply
a) reductions that can be performed in cython
b) iteration in python space
4) itertuples
5) iterrows
6) updating an empty frame (e.g. using loc one-row-at-a-time)
Using a cu...
In Python, how do you convert a `datetime` object to seconds?
...
239
For the special date of January 1, 1970 there are multiple options.
For any other starting da...
How to get the ASCII value of a character
...t; chr(97)
'a'
>>> chr(ord('a') + 3)
'd'
>>>
In Python 2, there is also the unichr function, returning the Unicode character whose ordinal is the unichr argument:
>>> unichr(97)
u'a'
>>> unichr(1234)
u'\u04d2'
In Python 3 you can use chr instead of unichr.
...
How to sum array of numbers in Ruby?
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edited Jul 26 '19 at 16:51
Fernando Briano
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How to upload a file to directory in S3 bucket using boto
...http://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_use_switch-role-ec2_instance-profiles.html), and to keep the same behaviour in your Dev/Test environment, use something like Hologram from AdRoll (https://github.com/AdRoll/hologram)
...
Highlight all occurrence of a selected word?
...
206
In Normal mode:
:set hlsearch
Then search for a pattern with the command / in Normal mode, ...
Batch script loop
I need to execute a command 100-200 times, and so far my research indicates that I would either have to copy/paste 100 copies of this command, OR use a for loop, but the for loop expects a list of items, hence I would need 200 files to operate on, or a list of 200 items, defeating the point.
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MySQL “WITH” clause
...ons-in-mysql-ctes/
Below is my earlier answer, which I originally wrote in 2008.
MySQL 5.x does not support queries using the WITH syntax defined in SQL-99, also called Common Table Expressions.
This has been a feature request for MySQL since January 2006: http://bugs.mysql.com/bug.php?id=16244
Oth...