DeBash - debugging Shell Scripts

#!/usr/bin/env python

import sys
import os

filename = "FILE0"
funcname = "FUNC0"
start_writren = True

def debash(filename):
        inputFile = open(filename, "r" )
        sourceArray = []
        for line in inputFile:
            sourceArray.append( line )
        inputFile.close()
        print "DEBASH: [%s][Read done]." % (filename)

        if (len(sys.argv) == 4 and sys.argv[2] == "-d"):
            destFile = open(sys.argv[3], "w")
        else:
            destFile = open(sys.argv[1], "w")

        sourceArray[0] = "%s %s" % (sourceArray[0], 'echo "Entered[%s]" >> /tmp/wisc.log; #DEBASH\n' % (filename))
        start_writren = True
        for line in sourceArray:
            # hard
            if(line.find("()") != -1):
                funcname = line[0:line.find("()")+2]
                start_writren = False


            if(line.find("{") == -1 and line.find("}") == -1):
                destFile.write(line)
            else:
                if(line.find("{") != -1 and line.find("}") == -1 and start_writren == False): # found only for the first time{
                    destFile.write(line)
                    destFile.write('\techo "[%s]:[%s]:[%s]" >> /tmp/wisc.log #DEBASH\n' % (filename, funcname, "start") )
                    start_writren = True
                elif(line.find("{") == -1 and line.find("}") != -1 and line == '}\n' ): # found only }
                    destFile.write('\techo "[%s]:[%s]:[%s]" >> /tmp/wisc.log #DEBASH\n' % (filename, funcname, "end") )
                    destFile.write(line)
                else:
                    destFile.write(line)
            #   hard done
        destFile.write('echo "Exited[%s]" >> /tmp/wisc.log #DEBASH\n' % (filename))
        destFile.close()
        print "DEBASH: [%s][Write done]." % (filename)

def undebash(filename):
    targetfile =  open(filename, "r" )
    sourceArray = []
    for line in targetfile:
        sourceArray.append( line )
    targetfile.close()
    destFile = open(filename, "w" )
    for line in sourceArray:
        if(line.find("#DEBASH") == -1):
            destFile.write(line)
def debash_help():
    print "debash.py [SOURCE] {-u | -d [DESTFILE]}"
def debash_descr():
    debash_help()
    print "\t[SOURCE] - file to debash"
    print "\t-u - causes UNDEBASH"
    print "\t-d - to determine another destination file.\n\t     If you want to keep debashed file with different name."

if (len(sys.argv) > 1 ):
    if(os.path.isfile(sys.argv[1]) == True and os.path.islink(sys.argv[1]) == False):
        isdebashed = False
        tmpfile = open(sys.argv[1], 'r')
        content = tmpfile.read()
        if(content.find("#DEBASH") != -1):
            isdebashed = True

        if(len(sys.argv) > 1):
            if(len(sys.argv) == 3):
                if(sys.argv[2] == "-u"):
                    if(isdebashed == True):
                        undebash(sys.argv[1])
                    else:
                        print"DEBASH: File [%s] is undebashed. Nothing done." % (sys.argv[1])
            else:
                if(isdebashed == False):
                    debash(sys.argv[1])
                else:
                    print"DEBASH: File [%s] is already debashed. Nothing done." % (sys.argv[1])
    else:
        if(sys.argv[1] == "-v"):
            print "DEBASH v0.1"
        elif(sys.argv[1] == "-h"):
            debash_descr()
else:
    if(len(sys.argv) < 2):
        print "DEBASH: ERROR! NO FILENAME DIVEN!"
    elif(os.path.isfile(sys.argv[1]) == False):
        print "DEBASH: ERROR! NOT A FILE!"
    elif(os.path.islink(sys.argv[1]) == False):
        print "DEBASH: FILE IS A LINK!"
    else:
        print "DEBASH: UNKNOWN ERROR LOL xD"
    debash_help()