hash_over_writer.py

# input name of hash only file
f = raw_input('Hash only, file name? ')
print f + ".txt"
read_file = f + ".txt"

g = raw_input("Hash:pass file name? ")
print g + ".txt"
pass_file = open(g + ".txt", "r")

lines = int(raw_input("How many hash:pass lines? "))
hashlength = int(raw_input("char length of hash? "))

# Read in the file
filedata = None
with open(read_file, 'r') as file:
    filedata = file.read()

for n in range(0, lines):
  # Desired outpt string (hash:pass)
  v = str(pass_file.readline())    # take out /n after readline
  q = str(v.rstrip('\n'))
  # Adjust length of hash type
  hashfind = str(v[:hashlength])
  # Writing
  filedata = filedata.replace(hashfind, q)

# Write the file out again
with open(read_file, 'w') as file:
    file.write(filedata)