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Bash Script : what does #!/bin/bash mean? [duplicate]
...php — Execute the file using the PHP command line interpreter
#!/usr/bin/python -O — Execute using Python with optimizations to code
#!/usr/bin/ruby — Execute using Ruby
and a few additional ones I can think off the top of my head, such as:
#!/bin/ksh
#!/bin/awk
#!/bin/expect
In a script ...
How do I trim whitespace?
Is there a Python function that will trim whitespace (spaces and tabs) from a string?
15 Answers
...
SQLAlchemy - Getting a list of tables
...e.table_names()) File "/Users/darshanchoudhary/.virtualenvs/services/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 2128, in table_names return self.dialect.get_table_names(conn, schema) value = value.replace(self.escape_quote, self.escape_to_quote) AttributeError: 'NoneType'...
How do I check the difference, in seconds, between two dates?
...
Upvoted for Python 2.6 answer. total_seconds() is a 2.7+ feature.
– Joe Holloway
Feb 13 '14 at 23:55
...
Auto-reload browser when I save changes to html file, in Chrome?
... development framework or language you use, whether it be Ruby, Handcraft, Python, Django, NET, Java, Php, Drupal, Joomla or what-have-you.
I copied this answer almost verbatim from here, because I think it's easier and more general than the currently accepted answer here.
...
[] and {} vs list() and dict(), which is better?
...sentially the same thing, but in terms of style, which is the better (more Pythonic) one to use to create an empty list or dict?
...
One-liner to check whether an iterator yields at least one element?
...
In Python 2.6+, if name sentinel is bound to a value which the iterator can't possibly yield,
if next(iterator, sentinel) is sentinel:
print('iterator was empty')
If you have no idea of what the iterator might possibly yi...
Allowed characters in filename [closed]
... that lists all allowed and disallowed characters.
– python dude
Jan 27 '11 at 8:30
7
@python, do...
How can you automatically remove trailing whitespace in vim
...s\+$//e
call cursor(l, c)
endfun
autocmd FileType c,cpp,java,php,ruby,python autocmd BufWritePre <buffer> :call <SID>StripTrailingWhitespaces()
If you want to apply this on save to any file, leave out the second autocmd and use a wildcard *:
autocmd BufWritePre * :call <SID>...
Is there a way for multiple processes to share a listening socket?
...ost others have provided the technical reasons why this works. Here's some python code you can run to demonstrate this for yourself:
import socket
import os
def main():
serversocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
serversocket.bind(("127.0.0.1", 8888))
serversocket....