Load the pipe-delimited file P. It is organized with 3 fields on each line: firstname|lastname|birthday. Search for the firstname F and last name L, replacing the birthday with B. Write the file back out in the same pipe-delimited format.
# Get the filepath from the command line
import sys
import re
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:
records= []
with open(filepath, 'r') as f:
element=f.readlines()
for row in element:
recordlist=row.strip('\n').split('|')
records.append(recordlist)
return records
#
# 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 x in range(len(records)):
row = records[x]
if row[0]== firstname and row[1]==lastname:
return x
return
# Sets the birthday of the record at the given index
# Returns: nothing
def setBirthday(records, index, newBirthday):
# Your code goes here:
if index== None:
return
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:
concat=[]
charV=""
for row in records:
concat.append(("|").join(row))
charV=("\n").join(concat)
return charV
# ----------------------------------------------------------------
#
# 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
outputFile = open(P,'w')
outputFile.write(output)
outputFile.close