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.

CODE GIVEN:

# 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 rfile:

lines = rfile.read().split(' ')

while '' in lines:

lines.remove('')

loadedArray = [line.split('|') for line in lines]

return loadedArray

#

# 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 line in records:

if firstname == line[0] and lastname == line[1]:

return records.index(line)

return -1

# Sets the birthday of the record at the given index

# Returns: nothing

def setBirthday(records, index, newBirthday):

# Your code goes here:

line = records[index]

line[2] = newBirthday

records[index] = line

# Convert the 2d array back into a string

# Return the text of the 2d array

def makeTextFrom2dArray(records):

# Your code goes here:

writer = str()

for line in records:

writer += "|".join(line) + " "

return writer