Source Code for Module cat

 1  #!/usr/bin/env python 
 2  """ 
 3  Very simple program that mimics the behavour of cat under unix but written in python 
 4  Written by Jerome Kieffer, october 2010  
 5  """ 
 6  import sys, os 
 7   
 8 -def stdin3stdout(): 
 9      "Copy stdin to stdout" 
10      sys.stdout.write(sys.stdin.read()) 
11   
12  if __name__ == "__main__": 
13      if len(sys.argv) >= 2: 
14          for filename in sys.argv[1:]: 
15              if os.path.isfile(filename): 
16                  sys.stdout.write(open(filename, "rb").read()) 
17              elif filename == "-": 
18                  stdin3stdout() 
19              else: 
20                  sys.stderr.write("cat: %s: No such file or directory" % filename) 
21      else: 
22          stdin3stdout() 
23