大约有 5,685 项符合查询结果（耗时：0.0305秒） [XML]
Jinja2 template variable if None Object set a default value
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I am amazed this simplicity! Python's x or y is if x is false, then y, else x. See: 5.2. Boolean Operations — and, or, not
– kenjiuno
Nov 22 '17 at 2:28
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How can I check whether a numpy array is empty or not?
... This is great for numpy, but is unfortunate that it is considered unpythonic for lists. Check out discussion for lists: stackoverflow.com/questions/53513/… It would be nice to use same pattern for numpy arrays and lists.
– eric
Jul 28 '19 at 16:41
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How do you run your own code alongside Tkinter's event loop?
...cl from different appartment" message on my computer (RedHat Enterprise 5, python 2.6.1). Bjorn might not have gotten this message, since, according to one place I checked, mishandling threading with Tkinter is unpredictable and platform-dependent.
The problem seems to be that app.start() counts a...
Class method decorator with self arguments?
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A more concise example might be as follows:
#/usr/bin/env python3
from functools import wraps
def wrapper(method):
@wraps(method)
def _impl(self, *method_args, **method_kwargs):
method_output = method(self, *method_args, **method_kwargs)
return method_output...
How to serialize SqlAlchemy result to JSON?
...o serialize your object.
As explained in Convert sqlalchemy row object to python dict
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Clear text from textarea with selenium
...rom selenium.webdriver.common.keys import Keys
#...your code (I was using python 3)
driver.find_element_by_id('foo').send_keys(Keys.CONTROL + "a");
driver.find_element_by_id('foo').send_keys(Keys.DELETE);
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NoSql Crash Course/Tutorial [closed]
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y_serial is written as a single Python module which reads like a working tutorial and includes many tips and references: http://yserial.sourceforge.net/
This takes the perspective of how to persist an arbitrary Python object (e.g. a dictionary data struct...
Visual Studio 2010 always thinks project is out of date, but nothing has changed
...e the process go very slowly.
I got impatient and wrote a quick-and-dirty Python script to check the (Visual Studio 2010) project files for me and output all the missing files at once, along with the filters they're located in. You can find it as a Gist here: https://gist.github.com/antiuniverse/...
Multiplication on command line terminal
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If you like python and have an option to install a package, you can use this utility that I made.
# install pythonp
python -m pip install pythonp
pythonp "5*5"
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pythonp "1 / (1+math.exp(0.5))"
0.3775406687981454
# define a custom f...
How to print a groupby object
...the first group call list(df_g)[0]. This is one thing I like about R over Python. In R you don't have to iterate through most object to see the data, but Python you have to on a lot of the object. Finding proceses like this are refreshing. Thanks Elizabeth.
– PVic
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