# Get the filepath from the command line
import sys
P= sys.argv[1]
F= sys.argv[2]
L= sys.argv[3]
B= sys.argv[4]

# ----------------------------------------------------------------
#
# Our Helper functions:
#
# ----------------------------------------------------------------

#
# Loads the file at filepath
# Returns a 2d array with the data
#
def load2dArrayFromFile(filepath):
  # Your code goes here:
  with open(filepath, 'r') as read_file:
    lines = read_file.readlines()

    result = []
    for line in lines:
      fields = line.strip().split('|')
      result.append(fields)

    return result
#
# Searches the 2d array 'records' for firstname, lastname.
# Returns the index of the record or -1 if no record exists
#
def findIndex(records, firstname, lastname):
  # Your code goes here:
  for index in range(len(records)):
    if records[index][0] == firstname and records[index][1] == lastname:
      return index

# Sets the birthday of the record at the given index
# Returns: nothing
def setBirthday(records, index, newBirthday):
  # Your code goes here:
  records[index][2] = newBirthday
# Convert the 2d array back into a string
# Return the text of the 2d array
def makeTextFrom2dArray(records):
  # Your code goes here:
  result = ''
  for row in records:
    result += '|'.join(row)
    result += '/n'
  return result.rstrip()
# ----------------------------------------------------------------
#
#  Our main code body, where we call our functions.
#
# ----------------------------------------------------------------

# Load our records from the file into a 2d array
records= load2dArrayFromFile(P)

# Find out which index, if any, has the name we are hunting
indexWeAreHunting= findIndex(records, F, L)

# Set the birthday record to the one we were passed
setBirthday(records, indexWeAreHunting, B)

# Convert the records into a text string
output= makeTextFrom2dArray(records)

# Your code goes here
# write the text string out to the file
output_string = makeTextFrom2dArray(records)

with open(P, 'w') as write_file:
    lines = write_file.write(output_string)