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How can I pass a list as a command-line argument with argparse?
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I prefer passing a delimited string which I parse later in the script. The reasons for this are; the list can be of any type int or str, and sometimes using nargs I run into problems if there are multiple optional arguments and positional arguments.
parser = ArgumentParser()
parser.add_...
How to deal with floating point number precision in JavaScript?
I have the following dummy test script:
42 Answers
42
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List all svn:externals recursively?
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I used the answer of Wim Coenen and wrote the following script to create a list of all revisions:
getSvnRevs() {
cd "$1"
wcver="$(svnversion)"
[ -n "$wcver" ] || panic "Unable to get version for $wcdir"
echo "$1: $wcver"
svn propget svn:externals -R | while read a b c d...
Table name as variable
...dynamically, and use sp_executesql to execute it.
Here is an example of a script used to compare data between the same tables of different databases:
static query:
SELECT * FROM [DB_ONE].[dbo].[ACTY]
EXCEPT
SELECT * FROM [DB_TWO].[dbo].[ACTY]
since I want easily change tha name of table and sch...
Schrödingers MySQL table: exists, yet it does not
...e point, I started getting table already exists errors half-way through my script. A server restart typically solved the issue, but that was too annoying of a solution.
Then I noticed in the local error log file this particular line:
[Warning] Setting lower_case_table_names=2 because file system f...
Linux command (like cat) to read a specified quantity of characters
... - output the first part of files
Synopsis
head [OPTION]... [FILE]...
Description
Print the first 10 lines of each FILE to standard output. With more than one FILE, precede each with a header giving the file name. With no FILE, or when
FILE is -, read standard input.
Mandatory arguments to long ...
Python argparse command line flags without arguments
...:
Source: myparser.py
import argparse
parser = argparse.ArgumentParser(description="Flip a switch by setting a flag")
parser.add_argument('-w', action='store_true')
args = parser.parse_args()
print args.w
Usage:
python myparser.py -w
>> True
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Installing pip packages to $HOME folder
... need to. The trick is passing the PEP370 --user argument to the setup.py script. With the latest version of pip, one way to do it is:
pip install --user mercurial
This should result in the hg script being installed in $HOME/.local/bin/hg and the rest of the hg package in $HOME/.local/lib/pytho...
Cannot overwrite model once compiled Mongoose
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My test script looks like so: "test": "NODE_ENV=test mocha --file mocha.config.js --watch" and in that config js file I have a before() and after() to handle setup and teardown. @E.Sundin provided the perfect solution here, and it wo...
Bash empty array expansion with `set -u`
I'm writing a bash script which has set -u , and I have a problem with empty array expansion: bash appears to treat an empty array as an unset variable during expansion:
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