Python Housekeeping and Maintenance

Question 1

library module offers features
that help us deal with our local file
system

Answer 1

os

import os

Question 2

os function that gets the current directory

Answer 2

os.getcwd()

Question 3

os function that walks the elements of a directory tree.

Answer 3

os.walk()

Question 4

os function that lists the directory of the specified path

Answer 4

os.listdir(path)

Question 5

os function that returns the absolute path of the specified file name

Answer 5

os.path.abspath(name)

Question 6

os function that returns true if the specified file or directory name exists

Answer 6

os.path.exists(name)

Question 7

os function that returns true if the specified name is a directory.

Answer 7

os.path.isdir(name)

Question 8

os function that returns true if the specified name is a file

Answer 8

os.path.isfile(name)

Question 9

method to determine if file has a specific ending

Answer 9

.filename.endswith(‘txt’)

Question 10

method to perform concatenation that accounts for path delimiter difference across operating platforms ( ‘/’ or ‘\’)

Answer 10

.join()

from os.path import join
thefile= os.path.join(dirname, filename)

Question 11

os method to return the file size

Answer 11

.getsize()
os.path.getsize(thefile)

Question 12

os method that deletes a file

Answer 12

.remove()

os.remove(thefile)

Question 13

method to create a pipe that connects the output from one execution to the input of another execution

Answer 13

.popen()

cmd = ‘ls -l’
file_pointer = os.popen(cmd)
all_lines = file_pointer.read()
print(all_lines)

status = file_pointer.close()
print(status)