files.py

#Defining a file path thats windows, mac or linux agnostic
from pathlib import Path

#Folder path
p = Path('spam/bacon/eggs')
#spam\bacon\eggs
print(p)
#spam\bacon\eggs
print(str(p))

#File path
p2 = Path('C:/files', 'text.txt')
#files\text.txt
print(p2)

#spam\bacon\eggs\files\text.txt
print(p / p2)

#Current directory
print(Path.cwd())

#Home directory
print(Path.home())

#Make a directory
p3 = Path.cwd() / Path('test')
#p3.mkdir()

#Parts of a file
#files
print(p2.parent)
#text.txt
print(p2.name)
#text
print(p2.stem)
#.txt
print(p2.suffix)
#C:
print(p.drive)

#C:\Users
print(Path.home().parents[0])
#C:\
print(Path.home().parents[1])

#Check if absolute path
print(Path.cwd().is_absolute())
#True
print(Path('spam', 'bacon', 'eggs').is_absolute())
#False

import os
#Get size of home folder in bytes
print(os.path.getsize(Path.home()))
#Get list of files in directoy
print(os.listdir(Path.home()))

#Does it even exist?
print(Path.cwd().exists()) #True
#Is it a file?
print(Path.cwd().is_file()) #False
#Is it a dir?
print(Path.cwd().is_dir()) #True

#Get multiple files in a directory based on a filter.
print(list(Path.cwd().glob('*.txt')))

#Read txt using path
#6
print(Path('spam.txt').write_text('Hello!'))
#Hello!
print(Path('spam.txt').read_text())

#Reading and writing to files with open function

nf = Path.cwd() / Path('numbers.txt')
inf = Path.cwd() / Path('inverse-numbers.txt')

#Reading a file
with open(nf) as file:
	contents = file.read()
	print(contents.rstrip())

#Reading line by line
with open(nf) as file:
	for line in file:
		print(line.rstrip())

#Buffering into a list
with open(nf) as file:
	lines = file.readlines()
	for line in lines:
		print(line.rstrip())

#Writing to an empty file
with open(inf, 'w') as file:
	i = 10
	while i >= 1:
		file.write(f'{i}\n')
		i -= 1

with open(inf) as file:
	print(file.read())

#Appending 
with open(inf, 'w') as file:
	file.write('0')

with open(inf) as file:
	print(file.read())

#Save python variables with shelve
import shelve
sf = shelve.open('data')
cats = ['Zen', 'Jack']
sf['cats'] = cats
sf.close()

sf = shelve.open('data')
new_cats = sf['cats']
sf.close()
print(new_cats)

#Creating dynamic python scripts and importing them
import pprint
cats = [{'name': 'Zen'}]
with open('dynamicCats.py', 'w') as file:
	file.write('cats = ' + pprint.pformat(cats) + "\n")

import dynamicCats
print(dynamicCats.cats[0]['name'])