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Using global variable in Python 

  1: # two global variable
  2: myMin = 360.0
  3: myMax = 0.0
  4: 
  5: def MyStatistics( fileName ) :
  6: 	myFile = open(fileName)
  7: 	strList = myFile.readlines()
  8: 	
  9: 	# Specify that these two are global variable
 10: 	global myMin
 11: 	global myMax
 12: 	
 13: 	for str in strList :
 14: 		myFloat = float(str)
 15: 		if( myFloat > myMax ):
 16: 			myMax = myFloat
 17: 			
 18: 		if( myFloat < myMin ):
 19: 			myMin = myFloat
 20: 
 21: # a file with number seperate '\n'			
 22: MyStatistics(FileWithFloat)
 23: 
 24: print 'myMin = %s' % (myMin)
 25: print 'myMax = %s' % (myMax)
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