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ncwdu.py
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ncwdu.py
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#!/usr/bin/python3
def start():
use_pool()
print_dir_info(sum([sizes for names, sizes in files]))
while True:
key = input("\nEnter a command: ")
result = action(key)
if result == 0:
break
def use_pool():
pool = ThreadPool(cpu_count() + 1)
file_list = os.listdir(os.getcwd())
files[:] = []
starting = time.time()
pool.map(get_info, file_list)
pool.close()
pool.join()
print(f"I spent {time.time() - starting} s to get directory info")
def get_info(f):
try:
if os.path.exists(f):
if os.path.isfile(f):
fp = os.path.join(os.getcwd(), f)
info = (f, os.path.getsize(fp))
files.append(info)
elif os.path.isdir(f):
dir_size = 0
for dirpath, dirnames, filenames in os.walk(f):
for filein in filenames:
fp = os.path.join(dirpath, filein)
if not os.path.islink(fp):
dir_size += os.path.getsize(fp)
info = (f, dir_size)
files.append(info)
except (PermissionError, FileNotFoundError, OSError):
pass
def print_dir_info(total_size):
out.clear_rows()
out.add_row([">", f"{os.getcwd()}", f"{total_size}", ""])
if os.path.dirname(os.path.dirname(os.getcwd())) != os.getcwd():
out.add_row(["1", "..", "", ""])
for i in range(len(files)):
out.add_row([f"{i + 2}", f"{files[i][0]}", f"{files[i][1]}", f"{files[i][1] / total_size * 100:,.2f}"])
print(out)
def print_help():
print('\ncwdu Course Work Disk Usage 2020')
print('List of options:\n')
print('h - open/close Help (wow!)')
print('q - quit the program')
print('1+ - change directory')
key = input("\nEnter a command: ")
if key == "q":
return 0
elif key == "h":
print_dir_info(sum([sizes for names, sizes in files]))
def action(key):
global threads
if key == "h":
return print_help()
elif key == "q":
return 0
else:
try:
dirch = int(key)
if dirch == 1 and os.path.dirname(os.path.dirname(os.getcwd())) != os.getcwd():
os.chdir('..')
use_pool()
print_dir_info(sum([sizes for names, sizes in files]))
elif 2 <= dirch < len(files) + 2:
p = files[dirch - 2][0]
if os.path.isdir(p):
try:
os.chdir(p)
use_pool()
except PermissionError:
print("You don't have permission to go there =(")
finally:
print_dir_info(sum([sizes for names, sizes in files]))
except ValueError:
pass
if __name__ == '__main__':
import os
import time
from multiprocessing import Manager, cpu_count
from multiprocessing.dummy import Pool as ThreadPool
from prettytable import PrettyTable
manager = Manager()
files = manager.list([])
out = PrettyTable()
out.title = 'cwdu Course Work Disk Usage 2020'
out.field_names = [' ', '', 'Size in bytes', 'Size in %']
out.align["Size in bytes"] = "c"
out.align["Size in %"] = "c"
start()