python run a system command
import os
cmd = "git --version"
returned_value = os.system(cmd)  # returns the exit code in unix
                                
                            python run a system command
import os
cmd = "git --version"
returned_value = os.system(cmd)  # returns the exit code in unix
                                
                            python run command
import os
os.system('cmd /k "Your Command Prompt Command"')
                                
                            python sys
import sys
print('Python version you are using')
print(sys.version)
print('Informantion')
print(sys.version_info)
                                
                            sys python
def displayhook(value):
    if value is None:
        return
    # Set '_' to None to avoid recursion
    builtins._ = None
    text = repr(value)
    try:
        sys.stdout.write(text)
    except UnicodeEncodeError:
        bytes = text.encode(sys.stdout.encoding, 'backslashreplace')
        if hasattr(sys.stdout, 'buffer'):
            sys.stdout.buffer.write(bytes)
        else:
            text = bytes.decode(sys.stdout.encoding, 'strict')
            sys.stdout.write(text)
    sys.stdout.write("n")
    builtins._ = value
                                
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