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def simplify_path(path):
"""
simplifying a given path
"""
folders = path.split("/")
new_folders = []
for folder in folders:
if folder == "" or folder == ".":
continue
elif folder == "..":
try:
if new_folders[-1] != "..":
new_folders.pop()
else:
new_folders.append("..")
except IndexError:
if path[0] == "/":
print("you can't go deeper than root folder")
else:
new_folders.append("..")
else:
new_folders.append(folder)
new_folders = "/".join(new_folders)
if not path[0].isalpha() and path[0] != ".":
new_folders = path[0] + new_folders
if len(new_folders) == 0:
new_folders = "."
print(new_folders)
return new_folders
if __name__ == '__main__':
# These "asserts" using only for self-checking and not necessary for auto-testing
# last slash is not important
assert simplify_path('/a/') == '/a'
# double slash can be united in one
assert simplify_path('/a//b/c') == '/a/b/c'
# double dot - go to previous folder
assert simplify_path('dir/fol/../no') == 'dir/no'
assert simplify_path('dir/fol/../../no') == 'no'
# one dot means current dir
assert simplify_path('/a/b/./ci') == '/a/b/ci'
assert simplify_path('vi/..') == '.'
assert simplify_path('./.') == '.'
# you can't go deeper than root folder
assert simplify_path('/for/../..') == '/'
assert simplify_path('/for/../../no/..') == '/'
# not all double-dots can be simplyfied in related path
assert simplify_path('for/../..') == '..'
assert simplify_path('../foo') == '../foo'
assert simplify_path(".././..") == "../.."
print('Simply enough! Let\'s check it now!!')