Python utilities for file handling

0-file handling

file handling using python

file_count_in_directory.py

################################################################################################
# name: file_count_in_directory.py
# desc: 
# date: 2019-03-30
# Author: conquistadorjd
################################################################################################
import os
import glob

print("*** Program Started ***")

dir_name = 'C:/sample/'

file_count = sum([len(files) for r, d, files in os.walk(dir_name)])
print('Number of Files using os.walk          :', file_count)

file_count = os.listdir(dir_name)
print("Number of Files using listdir method#1 :", len(file_count))

file_count =  len([name for name in os.listdir(dir_name) if os.path.isfile(os.path.join(dir_name, name))])
print("Number of Files using listdir method#2 :", file_count)

file_count =  [name for name in os.listdir(dir_name) if os.path.isfile(os.path.join(dir_name, name))]
print("Number of Files using listdir method#3 :", len(file_count))

file_count =  glob.glob(dir_name+'*.*')
print("Number of Files using glob             :", len(file_count))

print("*** Program Completed ***")

file_exists_01.py

################################################################################################
# name: file_exists_01.py
# desc: Check if file exists
# date: 2019-02-13
# Author: conquistadorjd
################################################################################################
import os

input_file_path = '/home/conquistador/code/github/python-01-utilities/file/'
input_file_name = 'file_exists_01.py'

file_exists = os.path.isfile(input_file_path+input_file_name) 
print('file_exists :', file_exists)

input_file_name = 'file_exists_99.py'

file_exists = os.path.isfile(input_file_path+input_file_name) 
print('file_exists :', file_exists)


input_file_name = 'file_exists_01.py'
dir_exists = os.path.isdir(input_file_path+input_file_name) 
print('dir_exists :', dir_exists)

dir_exists = os.path.isdir(input_file_path) 
print('dir_exists :', dir_exists)

input_file_path = '/home/conquistador/code/github/python-01-utilities/fil e/'
dir_exists = os.path.isdir(input_file_path) 
print('dir_exists :', dir_exists)

input_file_path = '/home/conquistador/code/github/python-01-utilities/file/'
exists = os.path.exists(input_file_path) 
print('exists :', exists)

exists = os.path.exists(input_file_path+input_file_name) 
print('exists :', exists)

file_exists_02.py

################################################################################################
# name: file_exists_02.py
# desc: Check if file exists
# date: 2019-02-13
# Author: conquistadorjd
################################################################################################
from pathlib import Path

input_file_path = '/home/conquistador/code/github/python-01-utilities/file/'
input_file_name = 'file_exists_01.py'

var = Path(input_file_path)
print('var : ', var.is_file())

var = Path(input_file_path+input_file_name)
print('var : ', var.is_file())


var = Path(input_file_path)
print('var : ', var.is_dir())

var = Path(input_file_path+input_file_name)
print('var : ', var.is_dir())


var = Path(input_file_path)
print('var : ', var.exists())

var = Path(input_file_path+input_file_name)
print('var : ', var.exists())

file_size.py

################################################################################################
# name: file_size.py
# desc: Getting gile size using python
# date: 2019-02-10
# Author: conquistadorjd
################################################################################################

import io, os

print('*** Program Started ***')

image_path_input = '/home/conquistador/code/github/python-01-utilities/file/input/'
image_name_input =  'file_size-01.jpg' #'file_size-02'

if os.stat(image_path_input + image_name_input).st_size ==0 :
	print('Input file is empty')
else :
	print('Input file is not empty')

print('File size (in Bytes) : ',os.stat(image_path_input + image_name_input).st_size)
print('File size (in Bytes) : ',os.path.getsize (image_path_input+image_name_input))


image_name_input =  'file_size-02'

if os.stat(image_path_input + image_name_input).st_size ==0 :
	print('Input file is empty')
else :
	print('Input file is not empty')

print('File size (in Bytes) : ',os.stat(image_path_input + image_name_input).st_size)
print('File size (in Bytes) : ',os.path.getsize (image_path_input+image_name_input))


print('*** Program Ended ***')

file_with_specific_extension_in_directory.py

################################################################################################
# name: file_with_specific_extension_in_directory.py
# desc: 
# date: 2019-03-30
# Author: conquistadorjd
################################################################################################
import os
import glob

print("*** Program Started ***")

dir_name = 'C:/sample/'

matches = []
for root, dirnames, filenames in os.walk(dir_name):
	for filename in filenames:
		# if filename.endswith(('.txt', '.MOV', '.avi', '.mpg')):  ## Checking for multiple extenstions
		if filename.endswith('.txt'):
			matches.append(filename)

print("List of Files using os.walk:", matches)

matches = []
filenames = os.listdir(dir_name)
for filename in filenames:
	# if filename.endswith(('.txt', '.MOV', '.avi', '.mpg')):     ## Checking for multiple extenstions
	if filename.endswith('.txt'):
		matches.append(filename)

print("List of Files using listdir:", matches)

# filenames =  glob.glob(dir_name+'*.txt')		## This will return file name with complete path name as well
matches = [os.path.basename(x) for x in glob.glob(dir_name+'*.txt')] ## This will return only file name
print("List of Files using glob   :", matches)

print("*** Program Completed ***")