prompt: You will be provided with a partial code base and an issue statement explaining a problem to resolve.
  <issue>
  Delete base85 algorithm
  ### Describe your change:
  Re #6216
  
  Normally, I'm not in favour of just deleting algorithms, but I would make the argument that this is not an algorithm, rather just a snippet of code that utilises another library.
  
  Per `CONTRIBTUING.md`
  > Algorithms in this repo should not be how-to examples for existing Python packages. Instead, they should perform internal calculations or manipulations to convert input values into different output values
  This `base85` algorithm has essentially got two lines of code that purely utilise a singular library. The doctests only test an external library
  
  This repository should not contains examples on how to use a certain library, that would be the library documentation here
  https://docs.python.org/3/library/base64.html
  
  
  * [ ] Add an algorithm?
  * [ ] Fix a bug or typo in an existing algorithm?
  * [ ] Documentation change?
  * [x] Delete an algorithm
  
  ### Checklist:
  * [x] I have read [CONTRIBUTING.md](https://github.com/TheAlgorithms/Python/blob/master/CONTRIBUTING.md).
  * [x] This pull request is all my own work -- I have not plagiarized.
  * [x] I know that pull requests will not be merged if they fail the automated tests.
  * [x] This PR only changes one algorithm file.  To ease review, please open separate PRs for separate algorithms.
  * [x] All new Python files are placed inside an existing directory.
  * [x] All filenames are in all lowercase characters with no spaces or dashes.
  * [x] All functions and variable names follow Python naming conventions.
  * [x] All function parameters and return values are annotated with Python [type hints](https://docs.python.org/3/library/typing.html).
  * [x] All functions have [doctests](https://docs.python.org/3/library/doctest.html) that pass the automated testing.
  * [x] All new algorithms include at least one URL that points to Wikipedia or another similar explanation.
  * [x] If this pull request resolves one or more open issues then the description above includes the issue number(s) with a [closing keyword](https://docs.github.com/en/issues/tracking-your-work-with-issues/linking-a-pull-request-to-an-issue): "Fixes #ISSUE-NUMBER".
  
  
  </issue>
  <code>
  [start of ciphers/base85.py]
  1 import base64
  2 
  3 
  4 def base85_encode(string: str) -> bytes:
  5     """
  6     >>> base85_encode("")
  7     b''
  8     >>> base85_encode("12345")
  9     b'0etOA2#'
  10     >>> base85_encode("base 85")
  11     b'@UX=h+?24'
  12     """
  13     # encoded the input to a bytes-like object and then a85encode that
  14     return base64.a85encode(string.encode("utf-8"))
  15 
  16 
  17 def base85_decode(a85encoded: bytes) -> str:
  18     """
  19     >>> base85_decode(b"")
  20     ''
  21     >>> base85_decode(b"0etOA2#")
  22     '12345'
  23     >>> base85_decode(b"@UX=h+?24")
  24     'base 85'
  25     """
  26     # a85decode the input into bytes and decode that into a human readable string
  27     return base64.a85decode(a85encoded).decode("utf-8")
  28 
  29 
  30 if __name__ == "__main__":
  31     import doctest
  32 
  33     doctest.testmod()
  34
  [end of ciphers/base85.py]
  </code>
  
  I need you to solve this issue by generating a single patch file that I can apply directly to this repository using git apply. Please respond with a single patch file in the following format.
  <patch>
  diff --git a/file.py b/file.py
  --- a/file.py
  +++ b/file.py
  @@ -1,27 +1,35 @@
   def euclidean(a, b):
  -    while b:
  -        a, b = b, a % b
  -    return a
  +    if b == 0:
  +        return a
  +    return euclidean(b, a % b)
   
   
   def bresenham(x0, y0, x1, y1):
       points = []
       dx = abs(x1 - x0)
       dy = abs(y1 - y0)
  -    sx = 1 if x0 < x1 else -1
  -    sy = 1 if y0 < y1 else -1
  -    err = dx - dy
  +    x, y = x0, y0
  +    sx = -1 if x0 > x1 else 1
  +    sy = -1 if y0 > y1 else 1
   
  -    while True:
  -        points.append((x0, y0))
  -        if x0 == x1 and y0 == y1:
  -            break
  -        e2 = 2 * err
  -        if e2 > -dy:
  -            err -= dy
  -            x0 += sx
  -        if e2 < dx:
  -            err += dx
  -            y0 += sy
  +    if dx > dy:
  +        err = dx / 2.0
  +        while x != x1:
  +            points.append((x, y))
  +            err -= dy
  +            if err < 0:
  +                y += sy
  +                err += dx
  +            x += sx
  +    else:
  +        err = dy / 2.0
  +        while y != y1:
  +            points.append((x, y))
  +            err -= dx
  +            if err < 0:
  +                x += sx
  +                err += dy
  +            y += sy
  +
  +    points.append((x, y))
       return points
  
  </patch>
golden_diff: diff --git a/ciphers/base85.py b/ciphers/base85.py
  --- a/ciphers/base85.py
  +++ b/ciphers/base85.py
  @@ -1,30 +1,55 @@
  -import base64
  +"""
  +Base85 (Ascii85) encoding and decoding
   
  +https://en.wikipedia.org/wiki/Ascii85
  +"""
   
  -def base85_encode(string: str) -> bytes:
  +
  +def _base10_to_85(d: int) -> str:
  +    return "".join(chr(d % 85 + 33)) + _base10_to_85(d // 85) if d > 0 else ""
  +
  +
  +def _base85_to_10(digits: list) -> int:
  +    return sum(char * 85**i for i, char in enumerate(reversed(digits)))
  +
  +
  +def ascii85_encode(data: bytes) -> bytes:
       """
  -    >>> base85_encode("")
  +    >>> ascii85_encode(b"")
       b''
  -    >>> base85_encode("12345")
  +    >>> ascii85_encode(b"12345")
       b'0etOA2#'
  -    >>> base85_encode("base 85")
  +    >>> ascii85_encode(b"base 85")
       b'@UX=h+?24'
       """
  -    # encoded the input to a bytes-like object and then a85encode that
  -    return base64.a85encode(string.encode("utf-8"))
  +    binary_data = "".join(bin(ord(d))[2:].zfill(8) for d in data.decode("utf-8"))
  +    null_values = (32 * ((len(binary_data) // 32) + 1) - len(binary_data)) // 8
  +    binary_data = binary_data.ljust(32 * ((len(binary_data) // 32) + 1), "0")
  +    b85_chunks = [int(_s, 2) for _s in map("".join, zip(*[iter(binary_data)] * 32))]
  +    result = "".join(_base10_to_85(chunk)[::-1] for chunk in b85_chunks)
  +    return bytes(result[:-null_values] if null_values % 4 != 0 else result, "utf-8")
   
   
  -def base85_decode(a85encoded: bytes) -> str:
  +def ascii85_decode(data: bytes) -> bytes:
       """
  -    >>> base85_decode(b"")
  -    ''
  -    >>> base85_decode(b"0etOA2#")
  -    '12345'
  -    >>> base85_decode(b"@UX=h+?24")
  -    'base 85'
  +    >>> ascii85_decode(b"")
  +    b''
  +    >>> ascii85_decode(b"0etOA2#")
  +    b'12345'
  +    >>> ascii85_decode(b"@UX=h+?24")
  +    b'base 85'
       """
  -    # a85decode the input into bytes and decode that into a human readable string
  -    return base64.a85decode(a85encoded).decode("utf-8")
  +    null_values = 5 * ((len(data) // 5) + 1) - len(data)
  +    binary_data = data.decode("utf-8") + "u" * null_values
  +    b85_chunks = map("".join, zip(*[iter(binary_data)] * 5))
  +    b85_segments = [[ord(_s) - 33 for _s in chunk] for chunk in b85_chunks]
  +    results = [bin(_base85_to_10(chunk))[2::].zfill(32) for chunk in b85_segments]
  +    char_chunks = [
  +        [chr(int(_s, 2)) for _s in map("".join, zip(*[iter(r)] * 8))] for r in results
  +    ]
  +    result = "".join("".join(char) for char in char_chunks)
  +    offset = int(null_values % 5 == 0)
  +    return bytes(result[: offset - null_values], "utf-8")
   
   
   if __name__ == "__main__":
  
verification_info: {"golden_diff": "diff --git a/ciphers/base85.py b/ciphers/base85.py\n--- a/ciphers/base85.py\n+++ b/ciphers/base85.py\n@@ -1,30 +1,55 @@\n-import base64\n+\"\"\"\n+Base85 (Ascii85) encoding and decoding\n \n+https://en.wikipedia.org/wiki/Ascii85\n+\"\"\"\n \n-def base85_encode(string: str) -> bytes:\n+\n+def _base10_to_85(d: int) -> str:\n+    return \"\".join(chr(d % 85 + 33)) + _base10_to_85(d // 85) if d > 0 else \"\"\n+\n+\n+def _base85_to_10(digits: list) -> int:\n+    return sum(char * 85**i for i, char in enumerate(reversed(digits)))\n+\n+\n+def ascii85_encode(data: bytes) -> bytes:\n     \"\"\"\n-    >>> base85_encode(\"\")\n+    >>> ascii85_encode(b\"\")\n     b''\n-    >>> base85_encode(\"12345\")\n+    >>> ascii85_encode(b\"12345\")\n     b'0etOA2#'\n-    >>> base85_encode(\"base 85\")\n+    >>> ascii85_encode(b\"base 85\")\n     b'@UX=h+?24'\n     \"\"\"\n-    # encoded the input to a bytes-like object and then a85encode that\n-    return base64.a85encode(string.encode(\"utf-8\"))\n+    binary_data = \"\".join(bin(ord(d))[2:].zfill(8) for d in data.decode(\"utf-8\"))\n+    null_values = (32 * ((len(binary_data) // 32) + 1) - len(binary_data)) // 8\n+    binary_data = binary_data.ljust(32 * ((len(binary_data) // 32) + 1), \"0\")\n+    b85_chunks = [int(_s, 2) for _s in map(\"\".join, zip(*[iter(binary_data)] * 32))]\n+    result = \"\".join(_base10_to_85(chunk)[::-1] for chunk in b85_chunks)\n+    return bytes(result[:-null_values] if null_values % 4 != 0 else result, \"utf-8\")\n \n \n-def base85_decode(a85encoded: bytes) -> str:\n+def ascii85_decode(data: bytes) -> bytes:\n     \"\"\"\n-    >>> base85_decode(b\"\")\n-    ''\n-    >>> base85_decode(b\"0etOA2#\")\n-    '12345'\n-    >>> base85_decode(b\"@UX=h+?24\")\n-    'base 85'\n+    >>> ascii85_decode(b\"\")\n+    b''\n+    >>> ascii85_decode(b\"0etOA2#\")\n+    b'12345'\n+    >>> ascii85_decode(b\"@UX=h+?24\")\n+    b'base 85'\n     \"\"\"\n-    # a85decode the input into bytes and decode that into a human readable string\n-    return base64.a85decode(a85encoded).decode(\"utf-8\")\n+    null_values = 5 * ((len(data) // 5) + 1) - len(data)\n+    binary_data = data.decode(\"utf-8\") + \"u\" * null_values\n+    b85_chunks = map(\"\".join, zip(*[iter(binary_data)] * 5))\n+    b85_segments = [[ord(_s) - 33 for _s in chunk] for chunk in b85_chunks]\n+    results = [bin(_base85_to_10(chunk))[2::].zfill(32) for chunk in b85_segments]\n+    char_chunks = [\n+        [chr(int(_s, 2)) for _s in map(\"\".join, zip(*[iter(r)] * 8))] for r in results\n+    ]\n+    result = \"\".join(\"\".join(char) for char in char_chunks)\n+    offset = int(null_values % 5 == 0)\n+    return bytes(result[: offset - null_values], \"utf-8\")\n \n \n if __name__ == \"__main__\":\n", "issue": "Delete base85 algorithm\n### Describe your change:\r\nRe #6216\r\n\r\nNormally, I'm not in favour of just deleting algorithms, but I would make the argument that this is not an algorithm, rather just a snippet of code that utilises another library.\r\n\r\nPer `CONTRIBTUING.md`\r\n> Algorithms in this repo should not be how-to examples for existing Python packages. Instead, they should perform internal calculations or manipulations to convert input values into different output values\r\nThis `base85` algorithm has essentially got two lines of code that purely utilise a singular library. The doctests only test an external library\r\n\r\nThis repository should not contains examples on how to use a certain library, that would be the library documentation here\r\nhttps://docs.python.org/3/library/base64.html\r\n\r\n\r\n* [ ] Add an algorithm?\r\n* [ ] Fix a bug or typo in an existing algorithm?\r\n* [ ] Documentation change?\r\n* [x] Delete an algorithm\r\n\r\n### Checklist:\r\n* [x] I have read [CONTRIBUTING.md](https://github.com/TheAlgorithms/Python/blob/master/CONTRIBUTING.md).\r\n* [x] This pull request is all my own work -- I have not plagiarized.\r\n* [x] I know that pull requests will not be merged if they fail the automated tests.\r\n* [x] This PR only changes one algorithm file.  To ease review, please open separate PRs for separate algorithms.\r\n* [x] All new Python files are placed inside an existing directory.\r\n* [x] All filenames are in all lowercase characters with no spaces or dashes.\r\n* [x] All functions and variable names follow Python naming conventions.\r\n* [x] All function parameters and return values are annotated with Python [type hints](https://docs.python.org/3/library/typing.html).\r\n* [x] All functions have [doctests](https://docs.python.org/3/library/doctest.html) that pass the automated testing.\r\n* [x] All new algorithms include at least one URL that points to Wikipedia or another similar explanation.\r\n* [x] If this pull request resolves one or more open issues then the description above includes the issue number(s) with a [closing keyword](https://docs.github.com/en/issues/tracking-your-work-with-issues/linking-a-pull-request-to-an-issue): \"Fixes #ISSUE-NUMBER\".\r\n\n", "before_files": [{"content": "import base64\n\n\ndef base85_encode(string: str) -> bytes:\n    \"\"\"\n    >>> base85_encode(\"\")\n    b''\n    >>> base85_encode(\"12345\")\n    b'0etOA2#'\n    >>> base85_encode(\"base 85\")\n    b'@UX=h+?24'\n    \"\"\"\n    # encoded the input to a bytes-like object and then a85encode that\n    return base64.a85encode(string.encode(\"utf-8\"))\n\n\ndef base85_decode(a85encoded: bytes) -> str:\n    \"\"\"\n    >>> base85_decode(b\"\")\n    ''\n    >>> base85_decode(b\"0etOA2#\")\n    '12345'\n    >>> base85_decode(b\"@UX=h+?24\")\n    'base 85'\n    \"\"\"\n    # a85decode the input into bytes and decode that into a human readable string\n    return base64.a85decode(a85encoded).decode(\"utf-8\")\n\n\nif __name__ == \"__main__\":\n    import doctest\n\n    doctest.testmod()\n", "path": "ciphers/base85.py"}]}