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Way to read first few lines for pandas dataframe
...ms to work. Using one of the standard large test files (988504479 bytes, 5344499 lines):
In [1]: import pandas as pd
In [2]: time z = pd.read_csv("P00000001-ALL.csv", nrows=20)
CPU times: user 0.00 s, sys: 0.00 s, total: 0.00 s
Wall time: 0.00 s
In [3]: len(z)
Out[3]: 20
In [4]: time z = pd.rea...
What open source C++ static analysis tools are available? [closed]
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edited Mar 13 '16 at 1:28
community wiki
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How can I capture the result of var_dump to a string?
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13 Answers
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How can I exclude all “permission denied” messages from “find”?
...as is done here (2> >(...)), appears to be silently ignored (in ksh 93u+).
grep -v 'Permission denied' filters out (-v) all lines (from the find command's stderr stream) that contain the phrase Permission denied and outputs the remaining lines to stderr (>&2).
This approach is:
r...
How to get and set the current web page scroll position?
...Laks
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MongoDB: Is it possible to make a case-insensitive query?
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How to get JSON objects value if its name contains dots?
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Russell LeggettRussell Leggett
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add a comm...
Check if item is in an array / list
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edited Feb 10 '19 at 21:23
answered Jun 28 '12 at 19:40
Sv...
How can I catch a ctrl-c event?
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Gab RoyerGab Royer
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