Python Modules

Author: RavinRakholiya

Chapter 20/Ravin/kedited1r.png

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+# Python Modules
+
+
+# Os Module
+# we can do file move, delet, check extension using this module
+
+
+# import os
+# print(os.getcwd())                # o/p: F:\Python_prac\Chapter 20
+
+# create folder
+
+# path=(r'F:\Python_prac\Chapter 20\movies'
+# os.mkdir("movies")                # when i ran first time, folder created, but when i ran second time i got error(FileExistsError: [WinError 183] Cannot create a folder when that folder already exists: 'movies')
+# print(os.path.exists('movies'))   # o/p: True              # it will check file exists or not and we have to enter path of the folder instead of folder name only.
+# if os.path.exists('movies'):
+#     print("already exists")
+# else:                                     # o/p: already exists
+#     os.mkdir('movies')
+
+
+# path=(r'F:\Python_prac\Chapter 20\movies')
+# --OR---
+# os.chdir(r'F:\Python_prac\Chapter 20')         and then use mkdir('movies') method
+
+# create file
+# open('file.txt','a').close()                           # it will create file, and it will not give error in case of file existing
+
+
+
+# print(os.listdir())                         # o/p: ['file.txt', 'movies', 'p20.py']                  # it will return the list of files and folders of current working directory
+# print(os.listdir(r'F:\Courses\python hindi'))        # o/p: ['harshit vashisth', 'test.py']
+
+
+
+# # if we want file path                                # o/p: F:\Python_prac\Chapter 20\file.txt
+# for item in os.listdir():                             #      F:\Python_prac\Chapter 20\movies
+#     # print(os.getcwd()+'\\'+item)                      #      F:\Python_prac\Chapter 20\p20.py
+#     # or
+#     path=os.path.join(os.getcwd(),item)
+#     print(path)
+
+
+
+
+# for item in os.listdir(r'F:\Courses\python hindi'):                             
+#     # print(r'F:\Courses\python hindi'+'\\'+item)                      
+#     # or                                                                      # o/p: F:\Courses\python hindi\harshit vashisth
+#     path=os.path.join(r'F:\Courses\python hindi',item)                        #      F:\Courses\python hindi\test.py
+#     print(path)
+
+
+
+
+
+# os.chdir(r'F:\Courses')
+# print(os.listdir())
+
+# # o/p: ['AWS', 'python 2', 'python hindi', '[FreeCourseLab.com] Udemy - Build Responsive Website Using HTML5, CSS3, JS And Bootstrap', '[FreeCourseLab.com] Udemy - Git for Windows Step-By-Step Mastery using Commands and GUI', '[FreeCourseLab.com] Udemy - Python 3 Complete Masterclass - Make Your Job Tasks Easier!', '[FreeCourseSite.com] Udemy - Docker Mastery The Complete Toolset From a Docker Captain', '[FreeTutorials.Eu] data-structures-algorithms-in-python', '[FreeTutorials.Eu] Udemy - Adobe Photoshop CC – Essentials Training Course', '[FreeTutorials.Eu] Udemy - sql-mysql-for-data-analytics-and-business-intelligence']
+
+
+
+
+
+
+# os.chdir(r'F:\Python_prac\Chapter 20')
+# # print(os.walk(r'F:\Python_prac\Chapter 20'))                   # o/p: <generator object walk at 0x00A0EED0>
+# file_iter=os.walk(r'F:\Python_prac\Chapter 20')
+# for current_path, folder_names, file_names in file_iter:
+#     print(f"current_path : {current_path}")
+#     print(f"folder_names : {folder_names}")
+#     print(f"file_names   : {file_names}")
+
+# #  o/p: current_path : F:\Python_prac\Chapter 20
+# #       folder_names : ['movies']
+# #       file_names   : ['file.txt', 'p20.py']
+# #       current_path : F:\Python_prac\Chapter 20\movies      
+# #       folder_names : ['Ravin']
+# #       file_names   : ['New Microsoft Excel Worksheet.xlsx']
+# #       current_path : F:\Python_prac\Chapter 20\movies\Ravin
+# #       folder_names : []
+# #       file_names   : ['New Bitmap Image.bmp']
+
+
+
+# create folder inside folder
+# os.makedirs('new/Ravin')                       # it will create Ravin folder inside new folder(here new and Ravin both are new folder)
+
+# i want to delete folder
+
+# os.rmdir('new')                  # o/p: OSError: [WinError 145] The directory is not empty: 'new'             this function delete only empty folder
+# we can delete not empty folder using shutil module
+# import shutil
+
+# delete not empty folder
+# shutil.rmtree('new')                               # rmtree function delete not empty folder permenantly, means folder will not move to the recycle bin
+
+# copy not empty folder in another folder
+# shutil.copytree('new','movies/new123')                 # copy new folder in movies and where new folder copied with new name like new123. we have to give path insted of folder name
+
+# copy file in anoter folder
+# shutil.copy(r'F:\Python_prac\Chapter 20\movies\a.xlsx',r'F:/Python_prac/Chapter 20/movies/new123/a1.xlsx')
+
+# move one folder in another folder
+# shutil.move(r'F:\Python_prac\Chapter 20\movies\new123',r'F:/Python_prac/Chapter 20/movies/Ravin/new1234')
+
+# move file in another folder
+# shutil.move(r'F:\Python_prac\Chapter 20\movies\a.xlsx',r'F:/Python_prac/Chapter 20/movies/new123/a2.xlsx')
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+# Edit Imagies using python  ---> we can do that using pillow library of python, but it is not standard library of python
+
+# Installation of pillow library
+#
+# pip install Pillow
+
+
+# how to change the extension
+# resize image files
+# resize multiple images using for loop 
+# Sharpness
+# Brightness
+# Color
+# Contrast
+# Image blur, Gaussianblur
+
+
+
+from PIL import Image
+import os
+
+
+
+
+# # how to change the extension
+# img1=Image.open(r'F:\Python_prac\Chapter 20\Ravin\r.png')
+# # if img1.mode == 'RGBA':
+# #     img1 = img1.convert('RGB')
+# # img1.save(r'F:\Python_prac\Chapter 20\Ravin\r.jpg')
+# # img1.show()
+
+
+
+
+
+# # resize image files
+# max_size=(250,250)
+# img1.thumbnail(max_size)
+# img1.save(r'F:\Python_prac\Chapter 20\Ravin\rsmall.png')
+
+
+# resize multiple images using for loop 
+
+# How to deal with all files
+
+# for item in os.listdir(r'F:\Python_prac\Chapter 20\Ravin'):
+#     if item.endswith('.jpg'):
+#         img1=Image.open(r'F:\Python_prac\Chapter 20\Ravin'+'\\'+item)
+#         file_name, extension=os.path.splitext(item)
+#         img1.save(r'F:\Python_prac\Chapter 20\Ravin'+'\\'+f'{file_name}.png')
+
+
+# for item in os.listdir(r'F:\Python_prac\Chapter 20\Ravin'):
+#     if item.endswith('.jpg'):
+#         img1=Image.open(r'F:\Python_prac\Chapter 20\Ravin'+'\\'+item)
+#         max_size=(250,250)
+#         img1.thumbnail(max_size)
+#         file_name, extension=os.path.splitext(item)
+#         img1.save(r'F:\Python_prac\Chapter 20\Ravin'+'\\'+f'{file_name}r.png')
+
+
+
+
+
+
+# sharpness, brightnessm color, contrast we have to import ImageEnhance module
+
+# Sharpness 
+# from PIL import ImageEnhance
+
+
+# img1=Image.open(r'F:\Python_prac\Chapter 20\Ravin\r2.jpg')
+# enhancer=ImageEnhance.Sharpness(img1)                                 # Sharpness is a class, ImageEnhance is a module
+# enhancer.enhance(10).save(r'F:\Python_prac\Chapter 20\Ravin\r2edited1.jpg')
+# # 0 ---> blurry image
+# # 1 ---> original image
+# # 2 ---> image with increased sharpness
+# # 3,4,5... ---> sharpness will incress
+
+
+
+
+
+# # # Color
+
+# img1=Image.open(r'F:\Python_prac\Chapter 20\Ravin\r2edited1.jpg')
+# enhancer=ImageEnhance.Color(img1)                                 # Color is a class, ImageEnhance is a module
+# enhancer.enhance(2).save(r'F:\Python_prac\Chapter 20\Ravin\r2editedc.png')
+
+# # 0 ---> black and white image
+# # 1 ---> original image
+# # 2,3,4...----> increase colour
+
+
+
+
+
+
+
+# # # Brightness
+
+# img1=Image.open(r'F:\Python_prac\Chapter 20\Ravin\r2edited1.jpg')
+# enhancer=ImageEnhance.Brightness(img1)                                 # Brightness is a class, ImageEnhance is a module
+# enhancer.enhance(1.5).save(r'F:\Python_prac\Chapter 20\Ravin\r2editedb.png')
+
+# # 0 ---> black image
+# # 1 ---> original image
+# # 2,3,4...----> increase brightness
+
+
+
+
+
+# # # Contrast
+
+# img1=Image.open(r'F:\Python_prac\Chapter 20\Ravin\r2edited1.jpg')
+# enhancer=ImageEnhance.Contrast(img1)                                 # Contrast is a class, ImageEnhance is a module
+# enhancer.enhance(1.5).save(r'F:\Python_prac\Chapter 20\Ravin\r2editedco.png')
+
+# # 0 ---> black and white image
+# # 1 ---> original image
+# # 2,3,4...----> increase contrast
+
+
+
+
+
+
+
+# Image blur  ----> for it we have to import filter
+from PIL import ImageFilter
+
+img1=Image.open(r'F:\Python_prac\Chapter 20\Ravin\r2edited1.jpg')
+img1.filter(ImageFilter.Gaussianblur(radius=4)).save(r'F:\Python_prac\Chapter 20\Ravin\r2blur.png')
+
+# bydefault radius is 2