$ time foo real 0m0.003s user 0m0.000s sys 0m0.004s $ What do real, user and sys mean in the output of time? Which one is meaningful when benchmarking my app? I have come across made codes in jupyter notebooks where sys is imported.

Context Explanation

I can't see the further use of the sys module in the code. Can someone help me to understand what is the purpose of importing sys? I do know about the module and it's uses though but can't find a concise reason of why is it used in many code blocks without any further use. 6 O módulo sys fornece funções e variáveis usadas para manipular diferentes partes do ambiente de tempo de execução do Python e apesar de serem completamente diferentes, muitas pessoas confundem o módulo sys e o módulo os (módulo para manipular o sistema operacional).

Insight Material

Como funciona o módulo sys do python e para que ele serve? sys.argv is a attribute of the sys module. It says the arguments passed into the file in the command line. sys.argv[0] catches the directory where the file is located. sys.argv[1] returns the first argument passed in the command line.

Final Conclusion

python - What does "sys.argv [1]" mean? (What is sys.argv, and where ... #!/usr/bin/python import sys.path from os.path import pardir, sep sys.path.append_relative(pardir + sep + "lib") import mylib Or even better, something that wouldn't break when my editor (or someone else who has commit access) decides to reorder the imports as part of its clean-up process: Python: Best way to add to sys.path relative to the current running ...