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Replacing blank values (white space) with NaN in pandas
...ux', ' '],
], columns='A B C'.split(), index=pd.date_range('2000-01-01','2000-01-06'))
# replace field that's entirely space (or empty) with NaN
print(df.replace(r'^\s*$', np.nan, regex=True))
Produces:
A B C
2000-01-01 -0.532681 foo 0
2000-01-02 1.490752 b...
How to print a query string with parameter values when using Hibernate
...
Abdull
21.9k1919 gold badges110110 silver badges155155 bronze badges
answered Nov 11 '09 at 6:40
Pascal ThiventPascal Thivent
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Calculate number of hours between 2 dates in PHP
.....)
– semmelbroesel
Apr 1 '13 at 19:01
2
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How to get the first and last date of the current year?
.....) function with "Year - 1900."
SELECT
DATEADD(yy, DATEDIFF(yy, 0, '20150301'), 0) AS StartOfYearForMarch2015,
DATEADD(yy, 2015 - 1900, 0) AS StartOfYearFor2015
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How to display gpg key details without importing it?
...NG: no command supplied. Trying to guess what you mean ...
pub rsa8192 2012-12-25 [SC]
0D69E11F12BDBA077B3726AB4E1F799AA4FF2279
uid Jens Erat (born 1988-01-19 in Stuttgart, Germany)
uid Jens Erat <jens.erat@fsfe.org>
uid Jens Erat <jens.erat@uni-konsta...
How to calculate time elapsed in bash script?
... on epoch:
$ string1="10:33:56"
$ date -u -D "%Y.%m.%d-%H:%M:%S" -d "1970.01.01-$string1" +"%Y.%m.%d-%H:%M:%S"
1970.01.01-10:33:56
Busybox date can even receive the time (in the format above) without -D:
$ date -u -d "1970.01.01-$string1" +"%Y.%m.%d-%H:%M:%S"
1970.01.01-10:33:56
And the output...
Using async/await for multiple tasks
...
Starting test: Task.WaitAll...
Worker 1 started on thread 1, beginning 0.01 seconds after test start.
Worker 2 started on thread 1, beginning 0.01 seconds after test start.
Worker 3 started on thread 1, beginning 0.01 seconds after test start.
Worker 4 started on thread 1, beginning 0.01 seconds a...
Cron job every three days
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Akshay Patil
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answered Jan 16 '11 at 22:36
tarecotareco
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How to get disk capacity and free space of remote computer
...S> $cred = Get-Credential -Credential 'example\administrator'
PS> 'db01','dc01','sp01' | Get-DiskFree -Credential $cred -Format | Format-Table -GroupBy Name -AutoSize
Name: DB01
Name Vol Size Used Avail Use% FS Type
---- --- ---- ---- ----- ---- -- ----
DB01 C: 39.9G 15.6G 24.3G ...
How to get the start time of a long-running Linux process?
... PID CMD STARTED
1 Tue Jun 7 01:29:38 2016 /sbin/init
2 Tue Jun 7 01:29:38 2016 [kthreadd]
3 Tue Jun 7 01:29:38 2016 [ksoftirqd/0]
5 Tue Jun 7 01:29:38 2016 [kworker/0:0H]
...