test5.py

# This file contains sample code for various Python concepts such as file handling, string manipulation, and functions.

# Code to create a file and write some content into it
f = open("practise.txt", "w")
f.write("This is a practise file.\n")
f.write("Hi Everyone.\n")
f.write("I am learning Python.\n")
f.write("I am also learning Java.\n")
f.close()

# Code to read the content of the file and check if a word is present in it, then replace a word and write the updated content back to the file
with open("practise.txt", "r") as f:
    content = f.read()
    print(content)
    if content.find("Java") != -1:
        print("The word 'Java' is present in the file.")
    else:
        print("The word 'Java' is not present in the file.")
replacedContent = content.replace("Python", "Java")
print(replacedContent)

with open("practise.txt", "w") as f:
    f.write(replacedContent)
f.close()

# Code to find a word in the file and print the line number where it is found
def findWordInFile(filename, word):
    with open(filename, "r") as f:
        content = f.read()
        if content.find(word) != -1:
            print("The word '" + word + "' is present in the file.")
        else:
            print("The word '" + word + "' is not present in the file.")
        f.close()

findWordInFile("practise.txt", "Python")

# Code to search for a word in the file and print the line number where it is found
def searchWordInFile():
    with open("practise.txt", "r") as f:
        found = True
        i = 1
        while found:
            content = f.readline()
            if not content:
                break
            if content.find("learnings") != -1:
                print("The word 'Python' is present in the file. Found at line number: ", i)
                break
            i += 1
    f.close()
    return -1
print(searchWordInFile())

 # Code to read the content of a file and print it
with open("practise.txt", "r") as f:
    content = f.read()
    print(content)
f.close()