Variable Length Record

Load the pipe-delimited file P. It is organized with 3 fields on each line: firstname|lastname|birthday.

Search for the firstname F and lastname L, replacing the birthday with B. Write the file back out in the same pipe-delimited format.

Given Code:

# 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:

#
# 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:

# Sets the birthday of the record at the given index
# Returns: nothing
def setBirthday(records, index, newBirthday):
# Your code goes here:

# Convert the 2d array back into a string
# Return the text of the 2d array
def makeTextFrom2dArray(records):
# Your code goes here:

#
#
# 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