###安装hardhat时步骤
mkdir hardhat-tutorial cd hardhat-tutorial npm init --yes npm install --save-dev hardhat
安装出现错误解决办法：
在C盘User找到 .npmrc 文件
然后 狠狠删掉！
错误如下：
PS D:hardhat> npm install --save-dev hardhat
npm WARN deprecated fsevents@2.1.3: "Please update to latest v2.3 or v2.2"
npm WARN deprecated debug@3.2.6: Debug versions >=3.2.0 <3.2.7 || >=4 <4.3.1 have a low-severity
ReDos regression when used in a Node.js environment. It is recommended you upgrade to 3.2.7 or 4.3.1. (https://github.com/visionmedia/debug/issues/797)
npm WARN deprecated uuid@3.4.0: Please upgrade to version 7 or higher. Older versions may use Math.random() in certain circumstances, which is known to be problematic. See https://v8.dev/blog/math-random for details.
npm ERR! code 1
npm ERR! path D:hardhatnode_modulessecp256k1
npm ERR! command failed
npm ERR! command C:WINDOWSsystem32cmd.exe /d /s /c node-gyp rebuild
npm ERR! gyp info it worked if it ends with ok
npm ERR! gyp info using node-gyp@7.1.2
npm ERR! gyp info using node@16.10.0 | win32 | x64
npm ERR! gyp ERR! find Python
npm ERR! gyp ERR! find Python Python is not set from command line or npm configuration
npm ERR! gyp ERR! find Python Python is not set from environment variable PYTHON
npm ERR! gyp ERR! find Python checking if "python3" can be used
npm ERR! gyp ERR! find Python - "python3" is not in PATH or produced an error
npm ERR! gyp ERR! find Python checking if "python" can be used
npm ERR! gyp ERR! find Python - "python" is not in PATH or produced an error
npm ERR! gyp ERR! find Python checking if "python2" can be used
npm ERR! gyp ERR! find Python - "python2" is not in PATH or produced an error
npm ERR! gyp ERR! find Python checking if Python is C:Python37python.exe
npm ERR! gyp ERR! find Python - "C:Python37python.exe" could not be run
npm ERR! gyp ERR! find Python checking if Python is C:Python27python.exe
npm ERR! gyp ERR! find Python - "C:Python27python.exe" could not be run
npm ERR! gyp ERR! find Python checking if the py launcher can be used to find Python
npm ERR! gyp ERR! find Python - "py.exe" is not in PATH or produced an error
npm ERR! gyp ERR! find Python
npm ERR! gyp ERR! find Python **********************************************************
npm ERR! gyp ERR! find Python You need to install the latest version of Python.
npm ERR! gyp ERR! find Python Node-gyp should be able to find and use Python. If not,
npm ERR! gyp ERR! find Python you can try one of the following options:
npm ERR! gyp ERR! find Python - Use the switch --python="C:PathTopython.exe"
npm ERR! gyp ERR! find Python (accepted by both node-gyp and npm)
npm ERR! gyp ERR! find Python - Set the environment variable PYTHON
npm ERR! gyp ERR! find Python - Set the npm configuration variable python:
npm ERR! gyp ERR! find Python npm config set python "C:PathTopython.exe"
npm ERR! gyp ERR! find Python For more information consult the documentation at:
npm ERR! gyp ERR! find Python https://github.com/nodejs/node-gyp#installation
npm ERR! gyp ERR! find Python **********************************************************
npm ERR! gyp ERR! find Python
npm ERR! gyp ERR! configure error
npm ERR! gyp ERR! stack Error: Could not find any Python installation to use
npm ERR! gyp ERR! stack at PythonFinder.fail (D:Program Filesnodejsnode_modulesnpmnode_modulesnode-gyplibfind-python.js:302:47)
npm ERR! gyp ERR! stack at PythonFinder.runChecks (D:Program Filesnodejsnode_modulesnpmnode_modulesnode-gyplibfind-python.js:136:21)
npm ERR! gyp ERR! stack at PythonFinder. (D:Program Filesnodejsnode_modulesnpmnode_modulesnode-gyplibfind-python.js:200:18)
npm ERR! gyp ERR! stack at PythonFinder.execFileCallback (D:Program Filesnodejsnode_modulenpm ERR! gyp ERR! stack at exithandler (node:child_process:404:5)
npm ERR! gyp ERR! stack at ChildProcess.errorhandler (node:child_process:416:5)
npm ERR! gyp ERR! stack at ChildProcess.emit (node:events:390:28)
npm ERR! gyp ERR! stack at Process.ChildProcess._handle.onexit (node:internal/child_process:288:12)
npm ERR! gyp ERR! stack at onErrorNT (node:internal/child_process:477:16)
npm ERR! gyp ERR! stack at processTicksAndRejections (node:internal/process/task_queues:83:21)
npm ERR! gyp ERR! System Windows_NT 10.0.19042
npm ERR! gyp ERR! command "D:\Program Files\nodejs\node.exe" "D:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\bin\node-gyp.js" "rebuild"
npm ERR! gyp ERR! cwd D:hardhatnode_modulessecp256k1
npm ERR! gyp ERR! node -v v16.10.0
npm ERR! gyp ERR! node-gyp -v v7.1.2
npm ERR! A complete log of this run can be found in:
npm ERR! C:UsersAdministrator.DESKTOP-87O8U3DAppDataLocalnpm-cache_logs2021-10-12T02_49_41_111Z-debug.log
PS D:hardhat> npm install --global --production windows-build-tools
npm WARN deprecated har-validator@5.1.5: this library is no longer supported
npm WARN deprecated uuid@3.4.0: Please upgrade to version 7 or higher. Older versions may use Math.random() in certain circumstances, which is known to be problematic. See https://v8.dev/blog/math-random for details.
npm WARN deprecated request@2.88.2: request has been deprecated, see https://github.com/request/request/issues/3142
npm WARN deprecated windows-build-tools@5.2.2: Node.js now includes build tools for Windows. You
probably no longer need this tool. See https://github.com/felixrieseberg/windows-build-tools for
details.
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