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Replacing Pandas or Numpy Nan with a None to use with MysqlDB
...ecast the DataFrames dtype to allow all datatypes types, using astype, and then the DataFrame fillna method:
df1 = df.astype(object).replace(np.nan, 'None')
Unfortunately neither this, nor using replace, works with None see this (closed) issue.
As an aside, it's worth noting that for most use ...
find -exec with multiple commands
...made a directory called 'aaa' with some files/dirs in there and CDd to it. Then, ~/aaa$ acmd() { echo x \"$1\" x; }; export -f acmd; find . -exec bash -c 'acmd {}' \;
– barlop
May 11 at 21:54
...
Is there a shortcut to make a block comment in Xcode?
...parameters}
repeat with anInput in input
if "/*" is in anInput then
set input to replaceText("/*", "", input as string)
set input to replaceText("*/", "", input as string)
return input
exit repeat
end if
end repeat
return "...
Array.size() vs Array.length
...ahamP, hit F12 on THIS page, and type [].size in the console. If it works, then you have some sort of Chrome Plugin that is mucking with the Array prototype, and I would be worried. :)
– aquinas
Jan 7 '13 at 19:30
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Why aren't my breakpoints working?
...pdating to XCode 7, This setting was somehow YES only in my subproject and then breakpoints didnt work in subprojects. And after setting to NO, it was perfect!
– Maheswaran Ravisankar
Feb 17 '16 at 13:59
...
Python's time.clock() vs. time.time() accuracy?
...u're timing some hardware (for example some algorithm you put in the GPU), then time.clock() will get rid of this time and time.time() is the only solution left.
Note: whatever the method used, the timing will depend on factors you cannot control (when will the process switch, how often, ...), this...
Postgresql: Scripting psql execution with password
...
There are several ways to authenticate to PostgreSQL. You may wish to investigate alternatives to password authentication at https://www.postgresql.org/docs/current/static/client-authentication.html.
To answer your question, there are a few ways provid...
“Remote System Explorer Operation” causing freeze for couple of seconds
...e found a work-around for this issue...
If the window pops up, close it then click the Stop button at the bottom
Uncheck "Build Automatically" under Project
Project | Build Project
Check "Build Automatically"
Now, try what you were doing again.
...
Is there “0b” or something similar to represent a binary number in Javascript
...ing as the first arg, so it turns it into "1111" (base 10 representation), then re-parses it as if it were base 2.
– Ted Hopp
Sep 12 '12 at 21:56
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Python extract pattern matches
...and ')') to capture parts of the string. The match object's group() method then gives you the group's contents:
>>> import re
>>> s = 'name my_user_name is valid'
>>> match = re.search('name (.*) is valid', s)
>>> match.group(0) # the entire match
'name my_user_...