return number of lines in a file python code example

Example 1: python how to count the lines in a file

# Basic syntax:
count = len(open('/path/to/the/file.ext').readlines())

Example 2: write number of lines in file python

fname = "test.txt"
count = 0
with open(fname, 'r') as f:
    for line in f:
        count += 1
print("Total number of lines is:", count)