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How do I sort a dictionary by value?
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Python 3.6+
>>> x = {1: 2, 3: 4, 4: 3, 2: 1, 0: 0}
>>> {k: v for k, v in sorted(x.items(), key=lambda item: item[1])}
{0: 0, 2: 1, 1: 2, 4: 3, 3: 4}
Older Python
It is not possible to sort a dictionary, on...
How to convert OutputStream to InputStream?
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@JBCP 's comment is spot on. Another use case is using PDFBox to build PDFs during an HTTP request. PDFBox using an OutputStream to save a PDF object, and the REST API accepts an InputStream to reply to the client. Hence, an OutputStream -> InputStream is a very real-world u...
Python: finding an element in a list [duplicate]
What is a good way to find the index of an element in a list in Python?
Note that the list may not be sorted.
10 Answers
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How to sort objects by multiple keys in Python?
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In case you like your code terse.
Later 2016-01-17
This works with python3 (which eliminated the cmp argument to sort):
from operator import itemgetter as i
from functools import cmp_to_key
def cmp(x, y):
"""
Replacement for built-in function cmp that was removed in Python 3
C...
Duplicate log output when using Python logging module
I am using python logger. The following is my code:
14 Answers
14
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In Python, what is the difference between “.append()” and “+= []”?
...or your case the only difference is performance: append is twice as fast.
Python 3.0 (r30:67507, Dec 3 2008, 20:14:27) [MSC v.1500 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import timeit
>>> timeit.Timer('s.append("somethi...
Writing string to a file on a new line every time
...ing every time I call file.write() . What's the easiest way to do this in Python?
10 Answers
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How to return a value from __init__ in Python?
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Where is new here? Is new implicit in Python? I assumed Python's semantics were different from Java and the other languages that do use this word.
– cs95
Jul 20 '16 at 6:06
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How to construct a set out of list items in python?
I have a list of filenames in python and I would want to construct a set out of all the filenames.
6 Answers
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How to remove stop words using nltk or python
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There's a very simple light-weight python package stop-words just for this sake.
Fist install the package using:
pip install stop-words
Then you can remove your words in one line using list comprehension:
from stop_words import get_stop_words
filtered_word...