C:\Users\Administrators>cd CodeFormer
C:\Users\Administrators\CodeFormer>pip install -r requirements.txt
Collecting addict (from -r requirements.txt (line 1))
  Using cached addict-2.4.0-py3-none-any.whl.metadata (1.0 kB)
Collecting future (from -r requirements.txt (line 2))
  Using cached future-1.0.0-py3-none-any.whl.metadata (4.0 kB)
Collecting lmdb (from -r requirements.txt (line 3))
  Using cached lmdb-1.4.1.tar.gz (881 kB)
  Preparing metadata (setup.py) ... error
  error: subprocess-exited-with-error
  × python setup.py egg_info did not run successfully.
  │ exit code: 1
  ╰─> [14 lines of output]
      Traceback (most recent call last):
        File "C:\Users\Administrators\AppData\Local\Temp\pip-install-ty8_c8cx\lmdb_bdf90049b41d45848e570a03bff83472\setup.py", line 92, in <module>
          import patch_ng as patch
      ModuleNotFoundError: No module named 'patch_ng'
      During handling of the above exception, another exception occurred:
      Traceback (most recent call last):
        File "<string>", line 2, in <module>
        File "<pip-setuptools-caller>", line 34, in <module>
        File "C:\Users\Administrators\AppData\Local\Temp\pip-install-ty8_c8cx\lmdb_bdf90049b41d45848e570a03bff83472\setup.py", line 94, in <module>
          raise Exception('Building py-lmdb from source on Windows requires the "patch-ng" python module.')
      Exception: Building py-lmdb from source on Windows requires the "patch-ng" python module.
      py-lmdb: Using bundled liblmdb with py-lmdb patches; override with LMDB_FORCE_SYSTEM=1 or LMDB_PURE=1.
      [end of output]
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed
× Encountered error while generating package metadata.
╰─> See above for output.
              
This error message suggests that it may be worth installing the Python

patch-ng package and then retrying. So:
 pip install patch-ng
 pip install -r requirements.txt