fopen() and open() in cpython

[Windson Yang]

After my investigation, I found Since Python maintains its own buffer when
read/write files, the build-in python open() function will call the open()
system call instead of calling standard io fopen() for caching.  So when we
read/write a file in Python, it would not call fopen(), fopen() only use
for Python itself but not for python user. Am I correct?