大约有 11,000 项符合查询结果（耗时：0.0309秒） [XML]
How to convert a dictionary to query string in Python?
...
Python 3
urllib.parse.urlencode(query, doseq=False, [...])
Convert a mapping object or a sequence of two-element tuples, which may contain str or bytes objects, to a percent-encoded ASCII text string.
— Pytho...
How to measure time taken between lines of code in python?
...
If you want to measure CPU time, can use time.process_time() for Python 3.3 and above:
import time
start = time.process_time()
# your code here
print(time.process_time() - start)
First call turns the timer on, and second call tells you how many seconds have elapsed.
There is also a...
List comprehension vs. lambda + filter
... of filter.
The first is the function call overhead: as soon as you use a Python function (whether created by def or lambda) it is likely that filter will be slower than the list comprehension. It almost certainly is not enough to matter, and you shouldn't think much about performance until you've ...
Python argparse: How to insert newline in the help text?
I'm using argparse in Python 2.7 for parsing input options. One of my options is a multiple choice. I want to make a list in its help text, e.g.
...
Hidden features of Python [closed]
What are the lesser-known but useful features of the Python programming language?
191 Answers
...
What's the difference between %s and %d in Python string formatting?
...a string (%s) and number is an integer (%d for decimal).
See https://docs.python.org/3/library/stdtypes.html#printf-style-string-formatting for details.
In Python 3 the example would be:
print('%s %d' % (name, number))
s...
Is there an easy way to pickle a python function (or otherwise serialize its code)?
...a network connection (using asyncore). Is there an easy way to serialize a python function (one that, in this case at least, will have no side affects) for transfer like this?
...
How to add a custom loglevel to Python's logging facility
...ally log(5, msg) isn't what I want. How can I add a custom loglevel to a Python logger?
16 Answers
...
How can I split and parse a string in Python?
I am trying to split this string in python: 2.7.0_bf4fda703454
3 Answers
3
...
Proper way to use **kwargs in Python
What is the proper way to use **kwargs in Python when it comes to default values?
14 Answers
...