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How to delete a specific line in a file?
...: december snow
This fork from Lother's solution works fine:
#!/usr/bin/python3.4
with open("file.txt","r+") as f:
new_f = f.readlines()
f.seek(0)
for line in new_f:
if "snow" not in line:
f.write(line)
f.truncate()
Improvements:
with open, which discard ...
Python JSON serialize a Decimal object
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Works in python3
– SeanFromIT
Jun 7 '18 at 16:10
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mkdir -p functionality in Python [duplicate]
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With Pathlib from python3 standard library:
Path(mypath).mkdir(parents=True, exist_ok=True)
If parents is true, any missing parents of this path are created as
needed; they are created with the default permissions without taking
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How to create a zip archive of a directory in Python?
...he entry point from a zipped archive.)
Zipping a Python app:
If you have python3.5+, and specifically want to zip up a Python package, use zipapp:
$ python -m zipapp myapp
$ python myapp.pyz
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UnicodeDecodeError: 'ascii' codec can't decode byte 0xd1 in position 2: ordinal not in range(128)
..., you can invoke all your Python code like this:
PYTHONIOENCODING="UTF-8" python3 ./path/to/your/script.py
or do
export PYTHONIOENCODING="UTF-8"
to set it in the shell you run that in.
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Add text to Existing PDF using Python
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For python3, packet should be io.BytesIO and use PyPDF2 rather than pyPDF (which is unmaintained). Great answer!
– Noufal Ibrahim
Jun 23 '16 at 11:36
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Fastest way to convert an iterator to a list
...des of an expression only to be able to slice or index it. (very common in python3, if it's a pure expression like zip, or map with a pure function)
– Jo So
Oct 24 '15 at 5:29
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hasNext in Python iterators?
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I'm with Python3 and this code gives me TypeError: iter() returned non-iterator
– madtyn
Sep 14 '17 at 13:35
2
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Python dictionary: Get list of values for list of keys
...emgetter(*mykeys)(mydict)
# use `list(...)` if list is required
Note: in Python3, map returns an iterator rather than a list. Use list(map(...)) for a list.
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Using pickle.dump - TypeError: must be str, not bytes
I'm using python3.3 and I'm having a cryptic error when trying to pickle a simple dictionary.
2 Answers
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