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Open the file in universal-newline mode using the CSV Django module
...am trying to access a model.filefield in Django to parse a CSV file in Python using the csv module. It's working on Windows, but on Mac it gave me this:
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Unique fields that allow nulls in Django
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** edit 11/30/2015: In python 3, the module-global __metaclass__ variable is no longer supported.
Additionaly, as of Django 1.10 the SubfieldBase class was deprecated:
from the docs:
django.db.models.fields.subclassing.SubfieldBase has be...
Python - How to sort a list of lists by the fourth element in each list? [duplicate]
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this is the reason why I love python <3
– Thai Tran
Jun 7 '15 at 9:35
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Encrypt & Decrypt using PyCrypto AES 256
... IV.
iv = Random.new().read(AES.block_size)
# Convert the IV to a Python integer.
iv_int = int(binascii.hexlify(iv), 16)
# Create a new Counter object with IV = iv_int.
ctr = Counter.new(AES.block_size * 8, initial_value=iv_int)
# Create AES-CTR cipher.
aes = AES.new(...
How to use Python's pip to download and keep the zipped files for a package?
If I want to use the pip command to download a package (and its dependencies), but keep all of the zipped files that get downloaded (say, django-socialregistration.tar.gz) - is there a way to do that?
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'and' (boolean) vs '&' (bitwise) - Why difference in behavior with lists vs numpy arrays?
...while & (when used with True/False values) tests if both are True.
In Python, empty built-in objects are typically treated as logically False while non-empty built-ins are logically True. This facilitates the common use case where you want to do something if a list is empty and something else i...
Emulate a do-while loop in Python?
I need to emulate a do-while loop in a Python program. Unfortunately, the following straightforward code does not work:
16 ...
How to take the first N items from a generator or list in Python? [duplicate]
... # grab the first five elements
You can't slice a generator directly in Python. itertools.islice() will wrap an object in a new slicing generator using the syntax itertools.islice(generator, start, stop, step)
Remember, slicing a generator will exhaust it partially. If you want to keep the entire...
Android TextView padding between lines
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You can use lineSpacingExtra and lineSpacingMultiplier in your XML file.
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Run certain code every n seconds [duplicate]
..., World!"
printit()
# continue with the rest of your code
https://docs.python.org/3/library/threading.html#timer-objects
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