Question

In Python, write a program that reads a text file that is provided by the user - ensure that the file exists before processing it! The file might be in a different directory, so be sure to test you logic - the user will provide the absolute path to the file if it is not in the same directory as the Python script! You should then ask the user for what string to search for in the file. Your program should then write each line that has a matching entry for the string entered by the user to a file in the current directory called "matches.txt" that should be cleared on each run of the program. You may assume that the user has permission to read the file.

Answer 1

OUTPUT :

CODE :

file = input('Enter file name: ')
try:
#Open file to read
f = open(file,'r')
#Open file to write
w = open('matches.txt','w')
#read string to search
s = input('Please enter string to search: ')
#Read all lines
for line in f:
#write to file
if s in line:
w.write(line)
w.flush()
w.close()
f.close()
except:
print('File not found')