add README for PythonSysAdmin
add information about abstruct function
add information about class
add information about built-in Exceptins
add information about except block of exception
add information about magic methods, property and iterator
add information about modules of Python
add information about package
add information about researching modules
add README information about sources of Python
add demo about reversing arguments
add information about sys module of Python
add information about os module
add demo about using fileinput modules
add information about fileinput module
add information about heap in python
add information about double queue and time module
add information about random module
add information about re module
add information about modules of Python