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How to shift a column in Pandas DataFrame
...n
1 206 214
2 226 234
3 245 253
4 265 272
So, run this script to get the expected output:
import pandas as pd
df = pd.DataFrame({'x1': ['206', '226', '245',' 265', '283'],
'x2': ['214', '234', '253', '272', '291']})
print(df)
df['x2'] = df['x2'].shift(1)
pri...
Handle file download from ajax post
I have a javascript app that sends ajax POST requests to a certain URL. Response might be a JSON string or it might be a file (as an attachment). I can easily detect Content-Type and Content-Disposition in my ajax call, but once I detect that the response contains a file, how do I offer the client t...
Bash variable scope
...swered so many of the seemingly random issues i was running into with bash scripting.
– Daniel Agans
Jan 27 '15 at 14:29
...
How can you find and replace text in a file using the Windows command-line environment?
I am writing a batch file script using Windows command-line environment and want to change each occurrence of some text in a file (ex. "FOO") with another (ex. "BAR"). What is the simplest way to do that? Any built in functions?
...
Remove blank lines with grep
...ace:]]*$' -e '^#' file will give you all non-blank, non-comment lines in a script or config file (or any file type that uses the hash character for comments).
– palswim
Feb 27 '18 at 23:11
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Python exit commands - why so many and when should each be used?
It seems that python supports many different commands to stop script execution. The choices I've found are: quit() , exit() , sys.exit() , os._exit()
...
Configuring Git over SSH to login once
... .agent > /dev/null
}
The .agent file is created automatically by the script; it contains the environment variables definitions and exports. The above tries to source the .agent file, and then tries to ps(1) the agent. If it doesn't work it starts an agent and creates a new agent file. You can ...
Scripting TFS Command Line for Get Latest Version, Check Out and Check in, programmatically
....new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f3762812%2fscripting-tfs-command-line-for-get-latest-version-check-out-and-check-in-progr%23new-answer', 'question_page');
}
);
Post as a guest
...
Best practice for Python assert
... when x become less than zero throughout the function. You can use class descriptors. Here is an example:
class LessThanZeroException(Exception):
pass
class variable(object):
def __init__(self, value=0):
self.__x = value
def __set__(self, obj, value):
if value < 0:
...
Items in JSON object are out of order using “json.dumps”?
...
in JSON, as in Javascript, order of object keys is meaningless, so it really doesn't matter what order they're displayed in, it is the same object.
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