我正在尝试安装 Brownie 并收到以下错误
" PS C:\Python39> pip install eth-brownie
Collecting eth-brownie
Using cached eth_brownie-1.14.6-py3-none-any.whl (207 kB)
Collecting execnet==1.8.0
Using cached execnet-1.8.0-py2.py3-none-any.whl (39 kB)
Collecting prompt-toolkit==3.0.18
Using cached prompt_toolkit-3.0.18-py3-none-any.whl (367 kB)
Requirement already satisfied: eth-utils==1.10.0 in c:\python39\lib\site-packages (from eth-brownie) (1.10.0)
Collecting typing-extensions==3.7.4.3
Using cached typing_extensions-3.7.4.3-py3-none-any.whl (22 kB)
Requirement already satisfied: urllib3==1.26.4 in c:\python39\lib\site-packages (from eth-brownie) (1.26.4)
Collecting pythx==1.6.1
Using cached pythx-1.6.1-py2.py3-none-any.whl (39 kB)
Requirement already satisfied: pyparsing==2.4.7 in c:\users\jgc\appdata\roaming\python\python39\site-packages (from eth-brownie) (2.4.7)
Collecting pyyaml==5.4.1
Using cached PyYAML-5.4.1-cp39-cp39-win_amd64.whl (213 kB)
Collecting pytest-xdist==1.34.0
Using cached pytest_xdist-1.34.0-py2.py3-none-any.whl (36 kB)
Requirement already satisfied: toolz==0.11.1 in c:\python39\lib\site-packages (from eth-brownie) (0.11.1)
Collecting jsonschema==3.2.0
Using cached jsonschema-3.2.0-py2.py3-none-any.whl (56 kB)
Collecting attrs==20.3.0
Using cached attrs-20.3.0-py2.py3-none-any.whl (49 kB)
Collecting sortedcontainers==2.3.0
Using cached sortedcontainers-2.3.0-py2.py3-none-any.whl (29 kB)
Requirement already satisfied: iniconfig==1.1.1 in c:\python39\lib\site-packages (from eth-brownie) (1.1.1)
Collecting vyper==0.2.12
Using cached vyper-0.2.12-py3-none-any.whl (222 kB)
Collecting bitarray==1.2.2
Using cached bitarray-1.2.2.tar.gz (48 kB)
Requirement already satisfied: idna==2.10 in c:\python39\lib\site-packages (from eth-brownie) (2.10)
Collecting requests==2.25.1
Using cached requests-2.25.1-py2.py3-none-any.whl (61 kB)
Requirement already satisfied: netaddr==0.8.0 in c:\python39\lib\site-packages (from eth-brownie) (0.8.0)
Collecting asttokens==2.0.4
Using cached asttokens-2.0.4-py2.py3-none-any.whl (20 kB)
Requirement already satisfied: chardet==4.0.0 in c:\python39\lib\site-packages (from eth-brownie) (4.0.0)
Requirement already satisfied: eth-typing==2.2.2 in c:\python39\lib\site-packages (from eth-brownie) (2.2.2)
Collecting inflection==0.5.0
Using cached inflection-0.5.0-py2.py3-none-any.whl (5.8 kB)
Requirement already satisfied: pycryptodome==3.10.1 in c:\python39\lib\site-packages (from eth-brownie) (3.10.1)
Collecting eth-keyfile==0.5.1
Using cached eth_keyfile-0.5.1-py3-none-any.whl (8.3 kB)
Collecting websockets==8.1
Using cached websockets-8.1.tar.gz (58 kB)
Collecting pytest==6.2.3
Using cached pytest-6.2.3-py3-none-any.whl (280 kB)
Requirement already satisfied: rlp==1.2.0 in c:\python39\lib\site-packages (from eth-brownie) (1.2.0)
Collecting py-solc-ast==1.2.8
Using cached py_solc_ast-1.2.8-py3-none-any.whl (10.0 kB)
Requirement already satisfied: eth-keys==0.3.3 in c:\python39\lib\site-packages (from eth-brownie) (0.3.3)
Collecting tqdm==4.60.0
Using cached tqdm-4.60.0-py2.py3-none-any.whl (75 kB)
Collecting eth-rlp==0.2.1
Using cached eth_rlp-0.2.1-py3-none-any.whl (5.0 kB)
Collecting pathspec==0.8.1
Using cached pathspec-0.8.1-py2.py3-none-any.whl (28 kB)
Collecting pytest-forked==1.3.0
Using cached pytest_forked-1.3.0-py2.py3-none-any.whl (4.7 kB)
Collecting click==7.1.2
Using cached click-7.1.2-py2.py3-none-any.whl (82 kB)
Collecting py-solc-x==1.1.0
Using cached py_solc_x-1.1.0-py3-none-any.whl (15 kB)
Collecting eth-event==1.2.3
Using cached eth_event-1.2.3-py3-none-any.whl (7.3 kB)
Collecting multiaddr==0.0.9
Using cached multiaddr-0.0.9-py2.py3-none-any.whl (16 kB)
Requirement already satisfied: packaging==20.9 in c:\python39\lib\site-packages (from eth-brownie) (20.9)
Collecting protobuf==3.15.8
Using cached protobuf-3.15.8-py2.py3-none-any.whl (173 kB)
Requirement already satisfied: six==1.15.0 in c:\python39\lib\site-packages (from eth-brownie) (1.15.0)
Requirement already satisfied: varint==1.0.2 in c:\python39\lib\site-packages (from eth-brownie) (1.0.2)
Collecting mypy-extensions==0.4.3
Using cached mypy_extensions-0.4.3-py2.py3-none-any.whl (4.5 kB)
Requirement already satisfied: eth-hash[pycryptodome]==0.3.1 in c:\python39\lib\site-packages (from eth-brownie) (0.3.1)
Collecting semantic-version==2.8.5
Using cached semantic_version-2.8.5-py2.py3-none-any.whl (15 kB)
Collecting pygments-lexer-solidity==0.7.0
Using cached pygments-lexer-solidity-0.7.0.tar.gz (7.3 kB)
Requirement already satisfied: py==1.10.0 in c:\python39\lib\site-packages (from eth-brownie) (1.10.0)
Requirement already satisfied: cytoolz==0.11.0 in c:\python39\lib\site-packages (from eth-brownie) (0.11.0)
Requirement already satisfied: wcwidth==0.2.5 in c:\users\jgc\appdata\roaming\python\python39\site-packages (from eth-brownie) (0.2.5)
Collecting eth-account==0.5.4
Using cached eth_account-0.5.4-py3-none-any.whl (94 kB)
Collecting psutil==5.8.0
Using cached psutil-5.8.0-cp39-cp39-win_amd64.whl (246 kB)
Collecting pygments==2.8.1
Using cached Pygments-2.8.1-py3-none-any.whl (983 kB)
Collecting eth-abi==2.1.1
Using cached eth_abi-2.1.1-py3-none-any.whl (27 kB)
Requirement already satisfied: parsimonious==0.8.1 in c:\python39\lib\site-packages (from eth-brownie) (0.8.1)
Collecting apipkg==1.5
Using cached apipkg-1.5-py2.py3-none-any.whl (4.9 kB)
Collecting hypothesis==6.10.0
Using cached hypothesis-6.10.0-py3-none-any.whl (364 kB)
Collecting black==20.8b1
Using cached black-20.8b1-py3-none-any.whl
Requirement already satisfied: certifi==2020.12.5 in c:\python39\lib\site-packages (from eth-brownie) (2020.12.5)
Requirement already satisfied: pluggy==0.13.1 in c:\python39\lib\site-packages (from eth-brownie) (0.13.1)
Collecting pyjwt==1.7.1
Using cached PyJWT-1.7.1-py2.py3-none-any.whl (18 kB)
Requirement already satisfied: pyrsistent==0.17.3 in c:\python39\lib\site-packages (from eth-brownie) (0.17.3)
Collecting regex==2021.4.4
Using cached regex-2021.4.4-cp39-cp39-win_amd64.whl (270 kB)
Collecting vvm==0.1.0
Using cached vvm-0.1.0-py3-none-any.whl (11 kB)
Requirement already satisfied: hexbytes==0.2.1 in c:\python39\lib\site-packages (from eth-brownie) (0.2.1)
Collecting ipfshttpclient==0.7.0a1
Using cached ipfshttpclient-0.7.0a1-py3-none-any.whl (231 kB)
Collecting lru-dict==1.1.7
Using cached lru-dict-1.1.7.tar.gz (10 kB)
Collecting mythx-models==1.9.1
Using cached mythx_models-1.9.1-py2.py3-none-any.whl (82 kB)
Collecting python-dotenv==0.16.0
Using cached python_dotenv-0.16.0-py2.py3-none-any.whl (18 kB)
Collecting typed-ast==1.4.3
Using cached typed_ast-1.4.3-cp39-cp39-win_amd64.whl (158 kB)
Requirement already satisfied: toml==0.10.2 in c:\python39\lib\site-packages (from eth-brownie)
(0.10.2)
Requirement already satisfied: base58==2.1.0 in c:\python39\lib\site-packages (from eth-brownie) (2.1.0)
Collecting web3==5.18.0
Using cached web3-5.18.0-py3-none-any.whl (469 kB)
Collecting python-dateutil==2.8.1
Using cached python_dateutil-2.8.1-py2.py3-none-any.whl (227 kB)
Collecting appdirs==1.4.4
Using cached appdirs-1.4.4-py2.py3-none-any.whl (9.6 kB)
Requirement already satisfied: setuptools in c:\python39\lib\site-packages (from jsonschema==3.2.0->eth-brownie) (56.0.0)
Collecting atomicwrites>=1.0
Using cached atomicwrites-1.4.0-py2.py3-none-any.whl (6.8 kB)
Requirement already satisfied: colorama in c:\users\jgc\appdata\roaming\python\python39\site-packages (from pytest==6.2.3->eth-brownie) (0.4.4)
Requirement already satisfied: pywin32>=223 in c:\users\jgc\appdata\roaming\python\python39\site-packages (from web3==5.18.0->eth-brownie) (301)
Using legacy 'setup.py install' for bitarray, since package 'wheel' is not installed.
Using legacy 'setup.py install' for lru-dict, since package 'wheel' is not installed.
Using legacy 'setup.py install' for pygments-lexer-solidity, since package 'wheel' is not installed.
Using legacy 'setup.py install' for websockets, since package 'wheel' is not installed.
Installing collected packages: attrs, atomicwrites, requests, python-dateutil, pytest, multiaddr, jsonschema, inflection, eth-rlp, eth-keyfile, eth-abi, bitarray, apipkg, websockets, typing-extensions, typed-ast, sortedcontainers, semantic-version, regex, pytest-forked, pyjwt, pygments,
protobuf, pathspec, mythx-models, mypy-extensions, lru-dict, ipfshttpclient, execnet, eth-account, click, asttokens, appdirs, web3, vyper, vvm, tqdm, pyyaml, pythx, python-dotenv, pytest-xdist, pygments-lexer-solidity, py-solc-x, py-solc-ast, psutil, prompt-toolkit, hypothesis, eth-event, black, eth-brownie
Attempting uninstall: python-dateutil
Found existing installation: python-dateutil 2.8.2
Uninstalling python-dateutil-2.8.2:
Successfully uninstalled python-dateutil-2.8.2
WARNING: Failed to write executable - trying to use .deleteme logic
ERROR: Could not install packages due to an OSError: [WinError 2] The system cannot find the file specified: 'c:\\python39\\Scripts\\py.test.exe' -> 'c:\\python39\\Scripts\\py.test.exe.deleteme'
PS C:\Python39>