common_error.py

Generic error handling example.

#!/usr/bin/python
 
 
import msparser
import sys
 
def main() :
    file = msparser.ms_datfile()
 
    if len(sys.argv) > 1 :  
        file.setFileName(sys.argv[1])
    else :
        file.setFileName("wrong_name.txt")
 
    file.read_file()
 
    if file.isValid() : 
        print("The file has been read and parsed successfully. Congratulations!")
    else :
        checkErrorHandler(file)
 
 
def checkErrorHandler(obj) :
    print("Last error description                   ")
    print("=========================================")
    print("Error: %s" % obj.getLastErrorString())
    print("=========================================")
    print("Testing the error handling...            ")
    print("=========================================")
 
    err = obj.getErrorHandler()
    for i in range(1 + err.getNumberOfErrors()) : 
        print("Error number: %d (%d times): %s" % (
                err.getErrorNumber(i),
                err.getErrorRepeats(i) + 1,
                err.getErrorString(i)
                ))
 
    obj.clearAllErrors()
 
 
if __name__ == "__main__":
    sys.exit(main())
 
 
""" Running the program with no arguments, for example with
 
python common_error.py
 
will give the output:
 
 
Last error description                   
=========================================
Error: Cannot find Mascot configuration file 'wrong_name.txt'.
=========================================
Testing the error handling...            
=========================================
Error number: 0 (1 times): 
Error number: 1537 (1 times): Cannot find Mascot configuration file 'wrong_name.txt'.
 
 
"""