1.在pycharm中安装cv2包报错
ERROR: Could not find a version that satisfies the requirement cv2 (from versions: none)
ERROR: No matching distribution found for cv2
WARNING: You are using pip version 21.3.1; however, version 22.0.3 is available.
You should consider upgrading via the 'C:Program FilesPython310python.exe -m pip install --upgrade pip' command.
这里报错pip版本低了，需要升级pip
2.然后去控制台升级pip，升级完去安装cv2，控制台继续报错
ERROR: Could not find a version that satisfies the requirement cv2 (from versions: none)
ERROR: No matching distribution found for cv2
解决方法：安装未成功，然后百度查找相关资料，说是压根没有cv2的包，实际上需要安装的是一个叫opencv-python的包
pip install opencv-python
因为网络原因，导致时间超出，出现了如下错误：
ERROR: Exception:
Traceback (most recent call last):
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_vendorurllib3response.py", line 438, in _error_catcher
yield
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_vendorurllib3response.py", line 519, in read
data = self._fp.read(amt) if not fp_closed else b""
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_vendorcachecontrolfilewrapper.py", line 90, in read
data = self.__fp.read(amt)
File "C:Program FilesWindowsAppsPythonSoftwareFoundation.Python.3.10_3.10.752.0_x64__qbz5n2kfra8p0libhttpclient.py", line 465, in read
s = self.fp.read(amt)
File "C:Program FilesWindowsAppsPythonSoftwareFoundation.Python.3.10_3.10.752.0_x64__qbz5n2kfra8p0libsocket.py", line 705, in readinto
return self._sock.recv_into(b)
File "C:Program FilesWindowsAppsPythonSoftwareFoundation.Python.3.10_3.10.752.0_x64__qbz5n2kfra8p0libssl.py", line 1273, in recv_into
return self.read(nbytes, buffer)
File "C:Program FilesWindowsAppsPythonSoftwareFoundation.Python.3.10_3.10.752.0_x64__qbz5n2kfra8p0libssl.py", line 1129, in read
return self._sslobj.read(len, buffer)
TimeoutError: The read operation timed outDuring handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_internalclibase_command.py", line 167, in exc_logging_wrapper
status = run_func(*args)
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_internalclireq_command.py", line 205, in wrapper
return func(self, options, args)
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_internalcommandsinstall.py", line 339, in run
requirement_set = resolver.resolve(
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_internalresolutionresolvelibresolver.py", line 94, in resolve
result = self._result = resolver.resolve(
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_vendorresolvelibresolvers.py", line 481, in resolve
state = resolution.resolve(requirements, max_rounds=max_rounds)
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_vendorresolvelibresolvers.py", line 348, in resolve
self._add_to_criteria(self.state.criteria, r, parent=None)
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_vendorresolvelibresolvers.py", line 172, in _add_to_criteria
if not criterion.candidates:
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_vendorresolvelibstructs.py", line 151, in __bool__
return bool(self._sequence)
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_internalresolutionresolvelibfound_candidates.py", line 155, in __bool__
return any(self)
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_internalresolutionresolvelibfound_candidates.py", line 143, in
return (c for c in iterator if id(c) not in self._incompatible_ids)
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_internalresolutionresolvelibfound_candidates.py", line 47, in _iter_built
candidate = func()
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_internalresolutionresolvelibfactory.py", line 215, in _make_candidate_from_link
self._link_candidate_cache[link] = linkCandidate(
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_internalresolutionresolvelibcandidates.py", line 288, in __init__
super().__init__(
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_internalresolutionresolvelibcandidates.py", line 158, in __init__
self.dist = self._prepare()
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_internalresolutionresolvelibcandidates.py", line 227, in _prepare
dist = self._prepare_distribution()
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_internalresolutionresolvelibcandidates.py", line 299, in _prepare_distribution
return preparer.prepare_linked_requirement(self._ireq, parallel_builds=True)
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_internaloperationsprepare.py", line 487, in prepare_linked_requirement
return self._prepare_linked_requirement(req, parallel_builds)
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_internaloperationsprepare.py", line 532, in _prepare_linked_requirement
local_file = unpack_url(
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_internaloperationsprepare.py", line 214, in unpack_url
file = get_http_url(
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_internaloperationsprepare.py", line 94, in get_http_url
from_path, content_type = download(link, temp_dir.path)
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_internalnetworkdownload.py", line 146, in __call__
for chunk in chunks:
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_internalcliprogress_bars.py", line 304, in _rich_progress_bar
for chunk in iterable:
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_internalnetworkutils.py", line 63, in response_chunks
for chunk in response.raw.stream(
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_vendorurllib3response.py", line 576, in stream
data = self.read(amt=amt, decode_content=decode_content)
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_vendorurllib3response.py", line 512, in read
with self._error_catcher():
File "C:Program FilesWindowsAppsPythonSoftwareFoundation.Python.3.10_3.10.752.0_x64__qbz5n2kfra8p0libcontextlib.py", line 153, in __exit__
self.gen.throw(typ, value, traceback)
File "C:UsersthorneAppDataLocalPackagesPythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0LocalCachelocal-packagesPython310site-packagespip_vendorurllib3response.py", line 443, in _error_catcher
raise ReadTimeoutError(self._pool, None, "Read timed out.")
pip._vendor.urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out.
3. pip install --default-timeout=1000 opencv-python（如果不能正确安装可以多试几次）