The sys module
Functions and variables used by the interpreter
sys.argv # Command line arguments
sys.path # Module search path
sys.maxint # Maximum integer value
sys.stdin # Standard input
sys.stdout # Standard output
sys.stderr # Standard error
sys.ps1 # Interactive interpreter prompt (>>>)
sys.ps2 # Interactive interpreter prompt (...)
sys.exc_info() # Information about last raised exception
sys.exit(n) # Exit from the interpreter
In addition, the module provides version and installation information
sys.version # Version string
sys.prefix # Installation prefix
sys.copyright # Copyright message
sys.executable # Name of executable
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