centos自定義安裝pip3
阿新 • • 發佈:2018-09-30
ans hud ttys ali 2.7 執行文件 -m 問題: jpg
題記
在之前的文章centos雲服務器安裝Python3記錄 記錄了怎麽自定義安裝 Python3 ,在後邊測試pip3的時候發現了個問題:
pip --version
terminal 打印:
pip 8.1.2 from /usr/lib/python2.7/site-packages (python 2.7)
如上:pip版本還是 Python2.7 版本
解決
由於對於系統和Python並不是特別熟悉,首先想到的是問下度娘。度娘給了幾種建議全部是下載pip再安裝。我沒有急於執行而是去看了下 官方文檔
其中有這樣的表述:
大概意思是:
1.看下系統內pip是否可用:
[root@liuyonghu python3]# pip --version pip 8.1.2 from /usr/lib/python2.7/site-packages (python 2.7)
2.查看pip是否存在於安裝包
[root@liuyonghu python3]# python -m ensurepip --default-pip
Looking in links: /tmp/tmpzzl1ppca
Requirement already satisfied: setuptools in ./lib/python3.7/site-packages (39.0.1)
Requirement already satisfied: pip in ./lib/python3.7/site-packages (10.0.1)
3. 由步驟 2 可知,pip3已經存在於 Python3.7 的安裝文件中,只是沒有對應的軟鏈
[root@liuyonghu bin]# ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3
[root@liuyonghu bin]# pip3 --version
pip 10.0.1 from /usr/local/python3/lib/python3.7/site-packages/pip (python 3.7)
4.想起來自己mac上的pip還是用的pip3,於是也修改軟鏈。
Last login: Sat Sep 29 23:13:21 on ttys002 liuyonghudeMacBook-Pro:~ liuyonghu$ pip3 --version pip 9.0.1 from /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages (python 3.6) liuyonghudeMacBook-Pro:~ liuyonghu$ which python3 /usr/local/bin/python3 liuyonghudeMacBook-Pro:~ liuyonghu$ which pip3 /usr/local/bin/pip3 liuyonghudeMacBook-Pro:~ liuyonghu$ ln -s /Library/Frameworks/Python.framework/Versions/3.6/bin/pip3 /usr/local/bin/pip liuyonghudeMacBook-Pro:~ liuyonghu$ pip --version pip 9.0.1 from /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages (python 3.6)
5. 其實中間查找pip路徑的步驟比較費勁,也記錄下來。
[root@liuyonghu python3]# pip --version
pip 8.1.2 from /usr/lib/python2.7/site-packages (python 2.7)
[root@liuyonghu python3]# python -m ensurepip --default-pip
Looking in links: /tmp/tmpzzl1ppca
Requirement already satisfied: setuptools in ./lib/python3.7/site-packages (39.0.1)
Requirement already satisfied: pip in ./lib/python3.7/site-packages (10.0.1)
[root@liuyonghu python3]# cd /user/bin
-bash: cd: /user/bin: 沒有那個文件或目錄
[root@liuyonghu python3]# cd /usr/bin
[root@liuyonghu bin]# ls pip*
pip pip2 pip2.7
[root@liuyonghu bin]# mv pip pip.bak
[root@liuyonghu bin]# cd ./lib/python3.7/site-packages (10.0.1)
-bash: 未預期的符號 `(' 附近有語法錯誤
[root@liuyonghu bin]# cd usr/lib/python3.7/site-packages (10.0.1)
-bash: 未預期的符號 `(' 附近有語法錯誤
[root@liuyonghu bin]# cd usr/lib/python3.7/site-packages
-bash: cd: usr/lib/python3.7/site-packages: 沒有那個文件或目錄
[root@liuyonghu bin]# mv pip.bak pip
[root@liuyonghu bin]# ls pip*
pip pip2 pip2.7
[root@liuyonghu bin]# cd usr/lib/python3.7
-bash: cd: usr/lib/python3.7: 沒有那個文件或目錄
[root@liuyonghu bin]# cd usr/local/python3
-bash: cd: usr/local/python3: 沒有那個文件或目錄
[root@liuyonghu bin]# cd /usr/lib/python3.7
-bash: cd: /usr/lib/python3.7: 沒有那個文件或目錄
[root@liuyonghu bin]# cd /usr/local
[root@liuyonghu local]# cd python3
[root@liuyonghu python3]# ls pip*
ls: 無法訪問pip*: 沒有那個文件或目錄
[root@liuyonghu python3]# ls
bin include lib share
[root@liuyonghu python3]# cd lib
[root@liuyonghu lib]# cd lib
-bash: cd: lib: 沒有那個文件或目錄
[root@liuyonghu lib]# ls pip*
ls: 無法訪問pip*: 沒有那個文件或目錄
[root@liuyonghu lib]# cd ..
[root@liuyonghu python3]# cd bin
[root@liuyonghu bin]# ls pip*
pip3 pip3.7
[root@liuyonghu bin]# ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3
[root@liuyonghu bin]# pip3 --version
pip 10.0.1 from /usr/local/python3/lib/python3.7/site-packages/pip (python 3.7)
總結:
1.Python3 在解壓,在預定目錄,編譯安裝之後,生成了Python、pip的執行文件。
2.在系統中的指令存在於不同系統的 /usr/*/bin/ 文件夾中,如有需要可以自己去建立軟鏈。
親情鏈接:
簡書
博客園
centos自定義安裝pip3