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How to drop a list of rows from Pandas dataframe?
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401
Use DataFrame.drop and pass it a Series of index labels:
In [65]: df
Out[65]:
one two...
Generating random whole numbers in JavaScript in a specific range?
...d it. It's a simple rule of three:
Math.random() returns a Number between 0 (inclusive) and 1 (exclusive). So we have an interval like this:
[0 .................................... 1)
Now, we'd like a number between min (inclusive) and max (exclusive):
[0 .................................... 1)...
How to validate an email address in PHP
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10 Answers
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Which SQL query is faster? Filter on Join criteria or Where clause?
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answered Mar 24 '10 at 17:40
QuassnoiQuassnoi
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Extract first item of each sublist
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201
Using list comprehension:
>>> lst = [['a','b','c'], [1,2,3], ['x','y','z']]
>>&...
Email Address Validation in Android on EditText [duplicate]
...target).
– rciovati
Apr 13 '13 at 9:02
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How to run crontab job every week on Sunday
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How to output only captured groups with sed?
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answered May 6 '10 at 2:39
Paused until further notice.Paused until further notice.
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How can I convert a DateTime to the number of seconds since 1970?
...ateTime variable to Unix time, ie, the number of seconds since Jan 1st, 1970. It looks like a DateTime is actually implemented as the number of 'ticks' since Jan 1st, 0001.
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Why does (0 < 5 < 3) return true?
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Order of operations causes (0 < 5 < 3) to be interpreted in javascript as ((0 < 5) < 3) which produces (true < 3) and true is counted as 1, causing it to return true.
This is also why (0 < 5 < 1) returns false, (0 < 5) returns t...