Some tips about python
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1.As py script running under unix system. Need to be endowed with execute permission.
e.g. chmod +x a.py
2.If you want to run script like ./xx.py. First of all append #!/usr/bin/pyhon 3 on first line of content.
3. #!/usr/bin/python3 & #!/usr/bin/env python 3 which called shebang line. The second one is better. Like some enviroment python3 interpretor doesn‘t install on default location(/usr/bin).
4.Key functions of IDE.
a. highlight
b. find typo
c. debug
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