sys.exit() and SystemExit : sys « Buildin Module « Python Tutorial

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Python Tutorial » Buildin Module » sys   14. 16. 9. sys.exit() and SystemExit #!/usr/bin/env       python import sys def usage():     print 'At least 2 arguments (incl. cmd name).'     print 'usage: args.py arg1 arg2 [arg3... ]'     sys.exit(1) argc = len(sys.argv) if argc < 3:     usage() print "number of args entered:", argc print "args (incl. cmd name) were:", sys.argv 14. 16. sys 14. 16. 1.  The list of search path can be found in the path variable in the sys module: 14. 16. 2.  stdin of the sys module is a file object 14. 16. 3.  sys module has the stdout and stderr attributes that point to files used for standard output and standard error output. 14. 16. 4.  Using sys.modules 14. 16. 5.  Redirecting Output 14. 16. 6.  Redirecting Error Information 14. 16. 7.  Printing to stderr 14. 16. 8.  os.system(command) executes a system function as if it were in a subshell 14. 16. 9.  sys.exit() and SystemExit 14. 16. 10.  sys.exitfunc() 14. 16. 11.  Append path to system path

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