Can someone help me debug my python code in the main function. There are red und

Question

Can someone help me debug my python code in the main function. There are red underlines that need to be fixed.

aggregator.py x 21 def main): 23 24 25 26 27 28 29 30 31 32 # read command line, filename, topic filename sys.argvl-1] # read file, line by line with open (filename) as f: content f.readlines() for line in lines: # for each line, pull contents from web using urllib if len(sys.argv)-3: print("Error: Invalid arguments") print("Usage:aggregator.py filename topic") file open (sys.argv [1] ,''r") out sys.argv [2] +"sources.txt" file1 open (out,"w") for line in file: 34 35 36 37 38 39 40 41 42 43 try: response = urllib.urlopen (line) content response.read() count0 for linel in content: ust-line1. split (">") List = list [1] . split("

Explanation / Answer

Hi, As you had asked for, here are the fixes for the Syntax errors (marked in red).

Line# 29 - lines (this list is undeclared and unassigned). The earlier statement content = f.readlines() must have been lines = f.readlines()

Line #54 - except: - this statement needs to be moved to left. It should be at the same level as the "try:" (line #38)

Line #55: Semi colon is not required here.

Please note : there are other (non-syntactial) errors that are not marked in red. Line #37 - variable line is not being used, line 43 and 44, the variable "list" is not being used.

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