BTGrad | Python Fiddle

import sys

def main():
    for arg in sys.argv:
        f = open(sys.argv[1])							# set f as name of text file
        
        for outerline in f:	
            eachword = outerline.split()				# set eachword as a list of each string in line
            
            if arg in eachword:							# check if any args passed by user appear in eachword
                print(" ".join(eachword))				# print all of the line containing eachword found
                g = f									# set g as f to use g instead of resetting f
	innerline()
            
        
def innerline():
	for everydep in eachword([2:-1]):		
        g = f								
        
        for innerline in g:
			eachword2 = innerline.split()				# set eachword 2 as a separate list of each string in line
            
            if eachword in eachword2					# check if eachword and eachword2 are the same
            	print(" ".join(eachword2[2:-1)			# print any required transitive dependencies in that line

if __name__ == '__main__':
    main()

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