How to read large text file line by line and process it?

Question

The file looks like this

   637   C0205088:Terminal (End-stage) [Qualitative Concept]
   637   C0439095:Alpha (Greek letter alpha (qualifier value)) [Intellectual Product]
   840   C0596072:amino group [Inorganic Chemical] 

Answer 1

try below code:

with open(r"filepath" , 'rb') as fp:
    for line in fp:
        print line.strip()