大约有 5,685 项符合查询结果（耗时：0.0379秒） [XML]
How to check if a file is a valid image file?
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I have just found the builtin imghdr module. From python documentation:
The imghdr module determines the type
of image contained in a file or byte
stream.
This is how it works:
>>> import imghdr
>>> imghdr.what('/tmp/bass')
'gif'
Using a module...
How to execute XPath one-liners from shell?
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One package that is very likely to be installed on a system already is python-lxml. If so, this is possible without installing any extra package:
python -c "from lxml.etree import parse; from sys import stdin; print '\n'.join(parse(stdin).xpath('//element/@attribute'))"
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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(...
Can Selenium Webdriver open browser windows silently in background?
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If you are using Selenium web driver with Python,you can use PyVirtualDisplay, a Python wrapper for Xvfb and Xephyr.
PyVirtualDisplay needs Xvfb as a dependency. On Ubuntu, first install Xvfb:
sudo apt-get install xvfb
then install PyVirtualDisplay from Pypi:
pi...
How to install multiple python packages at once using pip
I know it's an easy way of doing it but i didn't find it neither here nor on google.
So i was curious if there is a way to install multiple packages using pip.
Something like:
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Split Strings into words with multiple word boundary delimiters
...word character (a-z etc.) repeated one or more times". There's a HOWTO on Python regular expressions here: amk.ca/python/howto/regex
– RichieHindle
Jul 4 '09 at 19:44
334
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C++ Build Systems - What to use? [closed]
...ystem will be as bullet-proof as Scons. But, it's slow. It is written in Python and we've extended the interface for our "workspace-organization" (where we merely specify module dependencies), and that is part of the Scons design intent (this type of extension through Python). Convenient, but bui...
JSON serialization of Google App Engine models
...r strings and integers for me so far: developers.google.com/appengine/docs/python/datastore/… So I'm not sure you need to reinvent the wheel to serialize to json: json.dumps(db.to_dict(Photo))
– gentimouton
Jul 5 '12 at 22:49
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Multiple linear regression in Python
I can't seem to find any python libraries that do multiple regression. The only things I find only do simple regression. I need to regress my dependent variable (y) against several independent variables (x1, x2, x3, etc.).
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How to merge YAML arrays?
..." > ~/.ssh/known_hosts
- chmod 644 ~/.ssh/known_hosts
test:
image: python:3.7.3
stage: test
script:
- *pip_git
- pip install -q -r requirements_test.txt
- python -m unittest discover tests
use the same `*pip_git` on e.g. build image...
where requirements_te...