File Handling (Cambridge (CIE) O Level Computer Science)

Concept

OCR exam reference

Python

Open

OPENFILE "fruit.txt" FOR READ

file = open("fruit.txt","r")

Close

CLOSEFILE "fruit.txt"

file.close()

Read line

READFILE "fruit.txt", LineOfText

file.readline()

Write line

OPENFILE "fruit.txt" FOR WRITE

WRITEFILE "fruit.txt", "Oranges"

file.write("Oranges")

Append a file

OPENFILE "fruit.txt" FOR APPEND

file = open("shopping.txt","a")

Employees

Text file

file = open("employees.txt", "r") # open file in read mode
endOfFile = False # set end of file to false
while not endOfFile: # while not end of file
  name = file.readline() # read line 1
  department = file.readline() # read line 2
  salary = file.readline() # read line 3
  age = file.readline() # read line 4

  print("Name: ", name) # print name
  print("Department: ", department) # print department
  print("Salaray: ", salary) # print salary
  print("age: ", age) # print age
  
  if name == "": # if name is empty
    endOfFile = True # set end of file to true

file.close() # close file

Greg
Sales
39000
43
Lucy
Human resources
26750
28
Jordan
Payroll
45000
31

Employees

file = open("employees.txt", "a") # open file in append mode
file.write("Polly\n") # write line (\n for new line)
file.write("Sales\n")
file.write("26000\n")
file.write("32\n")

file.close() # close file

Greg
Sales
39000
43
Lucy
Human resources
26750
28
Jordan
Payroll
45000
31
Polly
Sales
26000
32