Mac 下 安装Python3，,因为Mac系统自带P

Mac 下 安装Python3，,因为Mac系统自带P

因为Mac系统自带Python2.7 所以我们开发要重新装Python3

直接运行下面就好

luohaotiandeMacBook-Pro:~ luohaotian$ which python/usr/bin/pythonluohaotiandeMacBook-Pro:~ luohaotian$ cd /usr/local/bin/luohaotiandeMacBook-Pro:bin luohaotian$ lsbrew        lz4     perlthanks  ptardiff    svnrdumpcnpm        lz4c        piconv      ptargrep    svnservecorelist    lz4cat      pl2pm       shasum      svnsynccpan        node        pod2html    splain      svnversionenc2xs      npm     pod2man     svn     unlz4encguess    npx     pod2text    svnadmin    vueh2ph        perl        pod2usage   svnbench    vue-inith2xs        perl5.30.0  podchecker  svndumpfilter   vue-listinstmodsh   perlbug     podselect   svnfsfs     webpackjson_pp     perldoc     prove       svnlook     xsubpplibnetcfg   perlivp     ptar        svnmucc     zipdetailsluohaotiandeMacBook-Pro:bin luohaotian$ python -VPython 2.7.10luohaotiandeMacBook-Pro:bin luohaotian$ brew search python3==> Formulaeboost-python3              python3                    python@3luohaotiandeMacBook-Pro:bin luohaotian$ brew install python3Updating Homebrew...==> Auto-updated Homebrew!Updated 1 tap (homebrew/core).==> Updated Formulaejdupes                                   mk-configure==> Installing dependencies for python: gdbm and xz==> Installing python dependency: gdbm==> Downloading https://homebrew.bintray.com/bottles/gdbm-1.18.1.mojave.bottle.1######################################################################## 100.0%==> Pouring gdbm-1.18.1.mojave.bottle.1.tar.gz??  /usr/local/Cellar/gdbm/1.18.1: 20 files, 586.8KB==> Installing python dependency: xz==> Downloading https://homebrew.bintray.com/bottles/xz-5.2.4.mojave.bottle.tar.==> Downloading from https://akamai.bintray.com/01/010667293df282c8bceede3bcd369######################################################################## 100.0%==> Pouring xz-5.2.4.mojave.bottle.tar.gz??  /usr/local/Cellar/xz/5.2.4: 92 files, 1MB==> Installing python==> Downloading https://homebrew.bintray.com/bottles/python-3.7.3.mojave.bottle.==> Downloading from https://akamai.bintray.com/25/25e0099852136c4ef1efd221247d0######################################################################## 100.0%==> Pouring python-3.7.3.mojave.bottle.tar.gz==> /usr/local/Cellar/python/3.7.3/bin/python3 -s setup.py --no-user-cfg install==> /usr/local/Cellar/python/3.7.3/bin/python3 -s setup.py --no-user-cfg install==> /usr/local/Cellar/python/3.7.3/bin/python3 -s setup.py --no-user-cfg install==> CaveatsPython has been installed as  /usr/local/bin/python3Unversioned symlinks `python`, `python-config`, `pip` etc. pointing to`python3`, `python3-config`, `pip3` etc., respectively, have been installed into  /usr/local/opt/python/libexec/binIf you need Homebrew's Python 2.7 run  brew install python@2You can install Python packages with  pip3 install <package>They will install into the site-package directory  /usr/local/lib/python3.7/site-packagesSee: https://docs.brew.sh/Homebrew-and-Python==> Summary??  /usr/local/Cellar/python/3.7.3: 3,863 files, 59.8MB==> Caveats==> pythonPython has been installed as  /usr/local/bin/python3Unversioned symlinks `python`, `python-config`, `pip` etc. pointing to`python3`, `python3-config`, `pip3` etc., respectively, have been installed into  /usr/local/opt/python/libexec/binIf you need Homebrew's Python 2.7 run  brew install python@2You can install Python packages with  pip3 install <package>They will install into the site-package directory  /usr/local/lib/python3.7/site-packagesSee: https://docs.brew.sh/Homebrew-and-PythonluohaotiandeMacBook-Pro:bin luohaotian$ brew info python3python: stable 3.7.3 (bottled), HEADInterpreted, interactive, object-oriented programming languagehttps://www.python.org//usr/local/Cellar/python/3.7.3 (3,863 files, 59.8MB) *  Poured from bottle on 2019-06-04 at 18:24:52From: https://github.com/Homebrew/homebrew-core/blob/master/Formula/python.rb==> DependenciesBuild: pkg-config ?Required: gdbm ?, openssl ?, readline ?, sqlite ?, xz ?==> Options--HEAD    Install HEAD version==> CaveatsPython has been installed as  /usr/local/bin/python3Unversioned symlinks `python`, `python-config`, `pip` etc. pointing to`python3`, `python3-config`, `pip3` etc., respectively, have been installed into  /usr/local/opt/python/libexec/binIf you need Homebrew's Python 2.7 run  brew install python@2You can install Python packages with  pip3 install <package>They will install into the site-package directory  /usr/local/lib/python3.7/site-packagesSee: https://docs.brew.sh/Homebrew-and-Python==> Analyticsinstall: 378,873 (30 days), 1,357,511 (90 days), 4,253,975 (365 days)install_on_request: 181,954 (30 days), 660,530 (90 days), 2,431,795 (365 days)build_error: 0 (30 days)luohaotiandeMacBook-Pro:bin luohaotian$ 

Mac 下 安装Python3