大约有 11,000 项符合查询结果（耗时：0.0246秒） [XML]
How to count the number of files in a directory using Python
I need to count the number of files in a directory using Python.
24 Answers
24
...
Why is Magento so slow? [closed]
...t 2011) is:
http://www.sessiondigital.com/assets/Uploads/Mag-Perf-WP-final.pdf
(Thanks due to Alan Storm on this one.)
share
|
improve this answer
|
follow
|
...
NameError: name 'reduce' is not defined in Python
I'm using Python 3.2. Tried this:
5 Answers
5
...
What is the difference between 'E', 'T', and '?' for Java generics?
...
It looks like the link to the PDF is broken. I've found what appears to be a copy here, but I can't be 100% certain since I don't know what the original looked like.
– John
May 30 '17 at 16:54
...
How to randomly select an item from a list?
...orrect', 'horse', 'staple']
print(secrets.choice(foo))
secrets is new in Python 3.6, on older versions of Python you can use the random.SystemRandom class:
import random
secure_random = random.SystemRandom()
print(secure_random.choice(foo))
...
Get loop count inside a Python FOR loop
In a Python for loop that iterates over a list we can write:
5 Answers
5
...
String concatenation vs. string substitution in Python
In Python, the where and when of using string concatenation versus string substitution eludes me. As the string concatenation has seen large boosts in performance, is this (becoming more) a stylistic decision rather than a practical one?
...
How to save a dictionary to a file?
...
Python has the pickle module just for this kind of thing.
These functions are all that you need for saving and loading almost any object:
def save_obj(obj, name ):
with open('obj/'+ name + '.pkl', 'wb') as f:
pi...
What will happen if I modify a Python script while it's running?
Imagine a python script that will take a long time to run, what will happen if I modify it while it's running? Will the result be different?
...
python date of the previous month
I am trying to get the date of the previous month with python.
Here is what i've tried:
12 Answers
...