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How to write to an existing excel file without overwriting data (using pandas)?
...Writer(filename, engine='openpyxl')
# Python 2.x: define [FileNotFoundError] exception if it doesn't exist
try:
FileNotFoundError
except NameError:
FileNotFoundError = IOError
try:
# try to open an existing workbook
writer.book = load_workbook(file...
Commenting multiple lines in DOS batch file
... to be executed.Though the code thede will still be parsed
and some syntax errors will be detected (FOR,IF ,improperly closed brackets, wrong parameter expansion ..).So if it is possible it's better to use GOTO.
Though it is not possible to create a macro/variable used as a label - but is possible ...
Why can I pass 1 as a short, but not the int variable i?
...not otherwise, so it needs reassurance that you've avoided an out-of-range error in your program logic. That reassurance is provided by a cast.
Write((short)i)
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What is PEP8's E128: continuation line under-indented for visual indent?
...file with Sublime Text (with Sublime Linter) and noticed a PEP8 formatting error that I'd never seen before. Here's the text:
...
How to log request and response body with Retrofit-Android?
...
Bonus
I know it's offtopic but I find it cool.
In case there's an http error code of unauthorized, here is an interceptor. I use eventbus for transmitting the event.
import android.content.Context;
import android.os.Handler;
import android.os.Looper;
import com.androidadvance.ultimateandroidtem...
Get class that defined method
...
In Python 2.7 it does not work. Same error about missing 'im_class'.
– RedX
May 23 '16 at 11:54
...
How to remove unreferenced blobs from my git repo
...# make sure we're at the root of git repo
if [ ! -d .git ]; then
echo "Error: must run this script from the root of a git repository"
exit 1
fi
# remove all paths passed as arguments from the history of the repo
files=$@
git filter-branch --index-filter "git rm -rf --cached --ignore-unmatch...
How to define two fields “unique” as couple
...
I would say you'll get a "ValidationError" exception. Have a look at the Django docs: Model.validate_unique
– Jens
Apr 10 '10 at 15:09
2
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Git push rejected after feature branch rebase
...hat case), but as git push performs only fast-forward merges it throws and error.
And what --force option does is just ignoring state of remote branch and setting it to the commit you're pushing into it. So git push --force origin feature-branch simply overrides origin/feature-branch with local fea...
Does Swift support reflection?
...ensive applications, but without the complexity, learning curve or risk of error associated with C++
While Swift is a compiled language, the messaging style of method invocation adds the introspection and dynamism found in modern languages like Ruby and Python, just like Objective-C, but without Obj...