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How to pass arguments to a Button command in Tkinter?
Suppose I have the following Button made with Tkinter in Python:
18 Answers
18
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How to correct TypeError: Unicode-objects must be encoded before hashing?
...that answer.
Now, the error message is clear: you can only use bytes, not Python strings (what used to be unicode in Python < 3), so you have to encode the strings with your preferred encoding: utf-32, utf-16, utf-8 or even one of the restricted 8-bit encodings (what some might call codepages).
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What does the star operator mean, in a function call?
What does the * operator mean in Python, such as in code like zip(*x) or f(**k) ?
5 Answers
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round() doesn't seem to be rounding properly
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As Vinko says, you can use string formatting to do rounding for display.
Python has a module for decimal arithmetic if you need that.
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How to find all occurrences of an element in a list?
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Or Use range (python 3):
l=[i for i in range(len(lst)) if lst[i]=='something...']
For (python 2):
l=[i for i in xrange(len(lst)) if lst[i]=='something...']
And then (both cases):
print(l)
Is as expected.
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why is plotting with Matplotlib so slow?
I'm currently evaluating different python plotting libraries. Right now I'm trying matplotlib and I'm quite disappointed with the performance. The following example is modified from SciPy examples and gives me only ~ 8 frames per second!
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Confusion between numpy, scipy, matplotlib and pylab
Numpy, scipy, matplotlib, and pylab are common terms among they who use python for scientific computation.
3 Answers
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An operation on a socket could not be performed because the system lac...
...注册表项：
值的名称： MaxUserPort
值类型： 双字节
值数据： 65534
有效范围： 5000-65534 （十进制）
默认值： 0x1388 （5000 十进制）
说明： 此参数控制的程序从系统请求任何可用的用户端口时所使用的最大端口号。通常情况下...
An operation on a socket could not be performed because the system lac...
...注册表项：
值的名称： MaxUserPort
值类型： 双字节
值数据： 65534
有效范围： 5000-65534 （十进制）
默认值： 0x1388 （5000 十进制）
说明： 此参数控制的程序从系统请求任何可用的用户端口时所使用的最大端口号。通常情况下...
An operation on a socket could not be performed because the system lac...
...注册表项：
值的名称： MaxUserPort
值类型： 双字节
值数据： 65534
有效范围： 5000-65534 （十进制）
默认值： 0x1388 （5000 十进制）
说明： 此参数控制的程序从系统请求任何可用的用户端口时所使用的最大端口号。通常情况下...