大约有 30,000 项符合查询结果(耗时:0.0598秒) [XML]
Find which version of package is installed with pip
...hat is the difference between using pip list and doing import X and then X.__version__? Are both the package versions?
– variable
Oct 13 '19 at 4:27
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What is the difference between join and merge in Pandas?
...andas as pd
left = pd.DataFrame({'key': ['foo', 'bar'], 'val': [1, 2]}).set_index('key')
right = pd.DataFrame({'key': ['foo', 'bar'], 'val': [4, 5]}).set_index('key')
left.join(right, lsuffix='_l', rsuffix='_r')
val_l val_r
key
foo 1 4
bar 2 5
The same functi...
How to check if a python module exists without importing it
...mport can find something in python2, using imp
import imp
try:
imp.find_module('eggs')
found = True
except ImportError:
found = False
To find dotted imports, you need to do more:
import imp
try:
spam_info = imp.find_module('spam')
spam = imp.load_module('spam', *spam_info)
i...
How to change the port of Tomcat from 8080 to 80?
I want to execute my web app as http://localhost .
14 Answers
14
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Bash Script : what does #!/bin/bash mean? [duplicate]
In bash script, what does #!/bin/bash at the 1st line mean ?
3 Answers
3
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SQL “between” not inclusive
I have a query like this:
8 Answers
8
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What is difference between functional and imperative programming languages?
Most of the mainstream languages, including object-oriented programming (OOP) languages such as C#, Visual Basic, C++, and Java were designed to primarily support imperative (procedural) programming, whereas Haskell/gofer like languages are purely functional. Can anybody elaborate on what is the dif...
TortoiseSVN icons not showing up under Windows 7
...g to 1.6.8 on Windows 7 x64. I only installed the x64 version and not the 32-bit version. To fix, I ran a repair with the original installer and rebooted. The overlays displayed normally thereafter.
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Do I need to disable NSLog before release Application?
...Debug configuration add a value to "Preprocessor Macros" value like:
DEBUG_MODE=1
Make sure you only do this for the Debug configuration and not for Beta or Release versions. Then in a common header file you can do something like:
#ifdef DEBUG_MODE
#define DLog( s, ... ) NSLog( @"<%p %@:(%d)&...
