How to Check a Particular File Exists or Not?
- We can use os library to get information about files in our computer. os module has path sub module,which contains isFile() function to check whether a particular file exists or not?
Syntax
- os.path.isfile(file name)
Q. Write a program to check whether the given file exists or not. If it is available then print its content?
Source Code:
#Follow - Programmerfect
import os,sys
fname=input("Enter File Name: ")
if os.path.isfile(fname):
print("File exists:",fname)
f=open(fname,"r")
else:
print("File does not exist:",fname)
sys.exit(0)
print("The content of file is:")
data=f.read()
print(data)
Output:
Note:
- sys.exit(0) ===>To exit system without executing rest of the program.
- argument represents status code . 0 means normal termination and it is the default value.
Q. Program to print the number of lines,words and characters present in the given file?
Source Code:
#Follow - Programmerfect
import os,sys
fname=input("Enter File Name: ")
if os.path.isfile(fname):
print("File exists:",fname)
f=open(fname,"r")
else:
print("File does not exist:",fname)
sys.exit(0)
lcount=wcount=ccount=0
for line in f:
lcount=lcount+1
ccount=ccount+len(line)
words=line.split()
wcount=wcount+len(words)
print("The number of Lines:",lcount)
print("The number of Words:",wcount)
print("The number of Characters:",ccount)
Output:
