大约有 4,800 项符合查询结果（耗时：0.0158秒） [XML]
Python list subtraction operation
...et subtraction" operation. Use the set data structure for that.
In Python 2.7:
x = {1,2,3,4,5,6,7,8,9,0}
y = {1,3,5,7,9}
print x - y
Output:
>>> print x - y
set([0, 8, 2, 4, 6])
share
|
...
Deep copy of a dict in python
...
Is there any difference in Python 3.2 and 2.7 codes? They seem identical to me. If so, would be better a single block of code and a statement "Works for both Python 3 and 2"
– MestreLion
Jun 7 '14 at 3:59
...
Constantly print Subprocess output while process is running
...or not the process has finished. I tried this using subprocess32 on python 2.7
– Har
Dec 26 '15 at 19:05
7
...
How can I open the interactive matplotlib window in IPython notebook?
... Works for me now (2014-08) using current release of Python 2.7 on Win7 x64.
– nerdfever.com
Aug 29 '14 at 1:31
|
show 13 mor...
Pythonic way to find maximum value and its index in a list?
...
This was on 2.7
– portforwardpodcast
Dec 7 '17 at 11:11
1
...
Is there any pythonic way to combine two dicts (adding values for keys that appear in both)?
...could also use for k in b.viewkeys() & a.viewkeys(), when using python 2.7, and skip the creation of sets.
– Martijn Pieters♦
Jun 13 '12 at 10:32
...
What's the bad magic number error?
...b3: 62101
2.5b3: 62111
2.5c1: 62121
2.5c2: 62131
2.6a0: 62151
2.6a1: 62161
2.7a0: 62171
share
|
improve this answer
|
follow
|
...
How do I find the location of Python module sources?
... 2.0+ is available online at http://hg.python.org/cpython/file/X.Y/ (e.g., 2.7 or 3.3). So, once you discover that inspect.getfile(datetime) is a .so or .pyd file like /usr/local/lib/python2.7/lib-dynload/datetime.so, you can look it up inside the Modules directory. Strictly speaking, there's no way...
Reading a huge .csv file
I'm currently trying to read data from .csv files in Python 2.7 with up to 1 million rows, and 200 columns (files range from 100mb to 1.6gb). I can do this (very slowly) for the files with under 300,000 rows, but once I go above that I get memory errors. My code looks like this:
...
builtins.TypeError: must be str, not bytes
I've converted my scripts from Python 2.7 to 3.2, and I have a bug.
2 Answers
2
...