6_different_functions_to_count_number_of_lines.py

import pandas as pd
import timeit


def count_lines_enumrate_list(file_name):
    fp = open(file_name,'r')
    line_count = list(enumerate(fp))[-1][0]

    return line_count

def count_lines_enumrate_loop(file_name):
    fp = open(file_name,'r')
    for line_count, line in enumerate(fp):
        pass
    return line_count

def count_lines_sum(file_name):
    fp = open(file_name,'r')
    line_count = sum(1 for line in fp)
    return  line_count

def count_lines_readlines(file_name):
    fp = open(file_name,'r')
    line_count = len(fp.readlines())
    return line_count

def count_lines_traditional(file_name):
    fp = open(file_name,'r')
    line_count = 0
    for line in fp:
        line_count += 1
    return line_count

def count_lines_pandas(file_name):
    df = pd.read_csv(file_name, header=0)
    return len(df.index)


source_file = ['flights_580mb.csv','flights_1400mb.csv','flights_2100mb.csv']
functions_list = ['count_lines_enumrate_loop','count_lines_enumrate_list','count_lines_sum' ,'count_lines_readlines','count_lines_traditional','count_lines_pandas']

for file_name in source_file:
    for function_name in functions_list:

        startime = timeit.default_timer()

        lines = eval(f"{function_name}('{file_name}')")
        print(f"{function_name}\t{file_name}\t{lines}\t{timeit.default_timer() - startime}")