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