Introduction

The task is to search the word in text file and print the line numbers is it present.

Program

openFile = open("demo.txt") 
readFile = openFile.read() 
openFile.seek(0) 
temp, x = [] , 1 
for searchedWord in readFile: 
    if searchedWord == '\n': 
        x += 1
print("Total number of lines: ", x)   
for y in range(x):  
    temp.append(openFile.readline()) 
def search(searchedWord): 
    for y in range(len(temp)): 
        if searchedWord in temp[y]: 
            print(y+1) 
    
search("Python")

Output

Explanation

Approach:

• Create a list to store the text of each lines in index format.
• Traverse through the indexes and check for the searched word.
  • Return the index+1 if word is present.