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How to strip all whitespace from string
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The accepted answer is old, from the times where almost noone used Python 3 and therefore does not cover Unicode strings. It also unnecessarily go into optimization, which was not asked for. That's why I updated this answer as the best, in my opinion.
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Reading a UTF8 CSV file with Python
... Does this mean the example in the python docs (where OP copy & pasted from) is wrong? What is the point of the extra encoding step it does if it breaks when you give it a unicode csv?
– Anentropic
Mar 6 '14 at 16:21
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Disable ActiveRecord for Rails 4
...ew my_app -O
For existing applications:
1. Remove database adapter gems from your Gemfile (mysql2, sqlite3, etc.)
2. Change your config/application.rb
Remove require 'rails/all line and require frameworks (among those available in your rails version, the list varies, do not just copy) you want ...
How do I get the result of a command in a variable in windows?
... with @PabloG's answer, this will only work to get the last line of output from the command, "date /t" in this case.
– John Meagher
Sep 20 '08 at 15:40
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Java: Getting a substring from a string starting after a particular character
...t = url.substringAfterLast("/")
println(result)
// It will show ghfj.doc
From the doc:
Returns a substring after the last occurrence of delimiter. If the string does not contain the delimiter, returns missingDelimiterValue which defaults to the original string.
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Git push requires username and password
I cloned a Git repository from my GitHub account to my PC.
24 Answers
24
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Python group by
..., ('9843236', 'KAT'), ('5594916', 'ETH'), ('1550003', 'ETH')]
>>> from collections import defaultdict
>>> res = defaultdict(list)
>>> for v, k in input: res[k].append(v)
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Then, convert that dictionary into the expected format.
>>> [{'type':k, 'items':v} for ...
Running Bash commands in Python
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Don't use os.system. It has been deprecated in favor of subprocess. From the docs: "This module intends to replace several older modules and functions: os.system, os.spawn".
Like in your case:
bashCommand = "cwm --rdf test.rdf --ntriples > test.nt"
import subprocess
process = subprocess....
Transpose/Unzip Function (inverse of zip)?
...p() returns a list consisting of tuples containing the corresponding items from all iterables (a kind of transpose operation). The iterable arguments may be a sequence or any iterable object; the result is always a list."
– cactus1
Jul 14 '17 at 19:26
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How to prevent scrollbar from repositioning web page?
...enter-aligned DIV. Now, some pages need scrolling, some don't. When I move from one type to another, the appearance of a scrollbar moves the page a few pixels to the side. Is there any way to avoid this without explicitly showing the scrollbars on each page?
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