如何在Ubuntu16.04上安裝Psycopg2 for python3

Question

我已經運行了sudo apt-get install python3-dev和最新的點子。

但是，當我跑pip install psycopg2，我得到這個錯誤：

Collecting psycopg2 
    Using cached psycopg2-2.7.1-cp27-cp27mu-manylinux1_x86_64.whl 
Installing collected packages: psycopg2 
Exception: 
Traceback (most recent call last): 
    File "/home/flint1025/.local/lib/python2.7/site-packages/pip/basecommand.py", line 215, in main 
    status = self.run(options, args) 
    File "/home/flint1025/.local/lib/python2.7/site-packages/pip/commands/install.py", line 342, in run 
    prefix=options.prefix_path, 
    File "/home/flint1025/.local/lib/python2.7/site-packages/pip/req/req_set.py", line 784, in install 
    **kwargs 
    File "/home/flint1025/.local/lib/python2.7/site-packages/pip/req/req_install.py", line 851, in install 
    self.move_wheel_files(self.source_dir, root=root, prefix=prefix) 
    File "/home/flint1025/.local/lib/python2.7/site-packages/pip/req/req_install.py", line 1064, in move_wheel_files 
    isolated=self.isolated, 
    File "/home/flint1025/.local/lib/python2.7/site-packages/pip/wheel.py", line 345, in move_wheel_files 
    clobber(source, lib_dir, True) 
    File "/home/flint1025/.local/lib/python2.7/site-packages/pip/wheel.py", line 316, in clobber 
    ensure_dir(destdir) 
    File "/home/flint1025/.local/lib/python2.7/site-packages/pip/utils/__init__.py", line 83, in ensure_dir 
    os.makedirs(path) 
    File "/usr/lib/python2.7/os.py", line 157, in makedirs 
    mkdir(name, mode) 
OSError: [Errno 13] Permission denied: '/usr/local/lib/python2.7/dist-packages/psycopg2-2.7.1.dist-info' 

然後搜索後，一些解決方案表明我應該改變目錄的所有權。所以，我想chown -R flint1025:27 /usr/local/lib/python2.7/dist-packages/psycopg2-2.7.1.dist-info但得到這個錯誤：

chown: cannot access '/usr/local/lib/python2.7/dist-packages/psycopg2-2.7.1.dist-info': No such file or directory 

我應該怎麼做？

Answer 1

好像你還沒有安裝virtualenv，所以你必須使用：sudo pip install psycopg2

Installing package without using virtual environment you need root permissions.