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What is the best way to repeatedly execute a function every x seconds?
I want to repeatedly execute a function in Python every 60 seconds forever (just like an NSTimer in Objective C). This code will run as a daemon and is effectively like calling the python script every minute using a cron, but without requiring that to be set up by the user.
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二进制组件使用指导 · App Inventor 2 中文网
...指导
二进制硬件报文
用 Python 独立核对默认报文
二进制组件帮你把「帧头、命令、温度、校验」这些内容和一串字节互相转换。它不收发数据，
收发交给蓝牙、Socket、WebSocket、MQTT 组件（...
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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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 identify whether a file is normal file or directory
How do you check whether a file is a normal file or a directory using python?
7 Answers
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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 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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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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Socket客户端使用指导 · App Inventor 2 中文网
...面代码保存为 tcp-peer.py。启动命令如下（Windows把 .venv/bin/python 改为 .venv\Scripts\python.exe）：
python3 tcp-peer.py
#!/usr/bin/env python3
"""实际TCP回显对端：接收文本、二进制和文件原始字节；CLOSE换行请求关闭。"""
import socketserver
class ...
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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