exception handling of Python

#exception handling of Python#how to do with the exception  just like java#raising exceptions#multiple exceptions#geniric exception#ignoring exception  how about pass#raising excpetiondef readFile(filename):    if filename.endswith('txt'):        fh = open(filename)        return fh.readinto()    else: raise  ValueError('filename must be ended with txt')# ignoring exception  how about passdef ignorexce():    counter = 0    try:       fh=open("file.txt")  #  here can give an example of file not exists ,and then the finally block will get counter equal 1  ,but now it will be 0       print  'ignor'  # csn not printlog    except:        pass   # will not print anything of error log        counter += 1        print  "error" # print this error    finally:  # the finally block        print "all work was done by Ethan"        print ('calculate the error times %s ' % counter)def main():    try :        fh = open("file.txt")        x = 1/0    except IOError as e:        print ('this my log :', e ) # if not found open file will print this log error in cousolut    except ZeroDivisionError as e :        print("u r divising by zero : ," ,e)    except:   # this is call generic exceptions ,this will catch everything ,this will it called generic        print ("unkown reasons")    else:        print("this will not print any way")    print "all done " # from here can know the excpetion will not break donw the process ,it will goes on    try:        for line in readFile("filename.tx1t") :print line   # file not ended with txt will get raising exceptions    except IOError as e1:        print ('big eror :',e1)    except ValueError as e :        print ('this message from raising exceptions : ',e)    ignorexce()main()