import os
import sys

(dir, filename) = os.path.split(os.path.abspath(sys.argv[0]))
print(dir)
filenames = os.listdir(dir)
for file in filenames:
    print(file)

print('*****************************************************')
updir = os.path.abspath('..')
print(updir)
filenames = os.listdir(updir)
for file in filenames:
    print(file)

print('*****************************************************')
os.chdir(updir)
upupdir = os.path.abspath('..')
print(upupdir)
filenames = os.listdir(upupdir)
for file in filenames:
    print(file)

print('*****************************************************')
os.chdir(upupdir)
upupupdir = os.path.abspath('..')
print(upupupdir)
filenames = os.listdir(upupupdir)
for file in filenames:
    print(file)
import os
import sys

(dir, filename) = os.path.split(os.path.abspath(sys.argv[0]))
print(dir)
filenames = os.listdir(dir)
for file in filenames:
    print(file)

print()
print()
print()
print('*****************************************************')
updir = os.path.abspath('..')
print(updir)
filenames = os.listdir(updir)
for file in filenames:
    print(file)

print()
print()
print()
print('*****************************************************')
os.chdir(updir)
upupdir = os.path.abspath('..')
print(upupdir)
filenames = os.listdir(upupdir)
for file in filenames:
    print(file)

print()
print()
print()
print('*****************************************************')
os.chdir(upupdir)
upupupdir = os.path.abspath('..')
print(upupupdir)
filenames = os.listdir(upupupdir)
for file in filenames:
    print(file)

print()
print()
print()
print('*****************************************************')
os.chdir(upupupdir)
upupupupdir = os.path.abspath('..')
print(upupupupdir)
filenames = os.listdir(upupupupdir)
for file in filenames:
    print(file)
Add a level of uper directory
Add a level of uper directory

  import os
  import sys
  
  (dir, filename) = os.path.split(os.path.abspath(sys.argv[0]))
  print(dir)
  filenames = os.listdir(dir)
  for file in filenames:
      print(file)
  
+ print()
+ print()
+ print()
  print('*****************************************************')
  updir = os.path.abspath('..')
  print(updir)
  filenames = os.listdir(updir)
  for file in filenames:
      print(file)
  
+ print()
+ print()
+ print()
  print('*****************************************************')
  os.chdir(updir)
  upupdir = os.path.abspath('..')
  print(upupdir)
  filenames = os.listdir(upupdir)
  for file in filenames:
      print(file)
  
+ print()
+ print()
+ print()
  print('*****************************************************')
  os.chdir(upupdir)
  upupupdir = os.path.abspath('..')
  print(upupupdir)
  filenames = os.listdir(upupupdir)
  for file in filenames:
      print(file)
+ 
+ print()
+ print()
+ print()
+ print('*****************************************************')
+ os.chdir(upupupdir)
+ upupupupdir = os.path.abspath('..')
+ print(upupupupdir)
+ filenames = os.listdir(upupupupdir)
+ for file in filenames:
+     print(file)
Add a level of uper directory
## Code Before:
import os
import sys

(dir, filename) = os.path.split(os.path.abspath(sys.argv[0]))
print(dir)
filenames = os.listdir(dir)
for file in filenames:
    print(file)

print('*****************************************************')
updir = os.path.abspath('..')
print(updir)
filenames = os.listdir(updir)
for file in filenames:
    print(file)

print('*****************************************************')
os.chdir(updir)
upupdir = os.path.abspath('..')
print(upupdir)
filenames = os.listdir(upupdir)
for file in filenames:
    print(file)

print('*****************************************************')
os.chdir(upupdir)
upupupdir = os.path.abspath('..')
print(upupupdir)
filenames = os.listdir(upupupdir)
for file in filenames:
    print(file)
## Instruction:
Add a level of uper directory
## Code After:
import os
import sys

(dir, filename) = os.path.split(os.path.abspath(sys.argv[0]))
print(dir)
filenames = os.listdir(dir)
for file in filenames:
    print(file)

print()
print()
print()
print('*****************************************************')
updir = os.path.abspath('..')
print(updir)
filenames = os.listdir(updir)
for file in filenames:
    print(file)

print()
print()
print()
print('*****************************************************')
os.chdir(updir)
upupdir = os.path.abspath('..')
print(upupdir)
filenames = os.listdir(upupdir)
for file in filenames:
    print(file)

print()
print()
print()
print('*****************************************************')
os.chdir(upupdir)
upupupdir = os.path.abspath('..')
print(upupupdir)
filenames = os.listdir(upupupdir)
for file in filenames:
    print(file)

print()
print()
print()
print('*****************************************************')
os.chdir(upupupdir)
upupupupdir = os.path.abspath('..')
print(upupupupdir)
filenames = os.listdir(upupupupdir)
for file in filenames:
    print(file)