In import pandas, SyntaxError appears for pandas/init.py.

When I run the python file on the terminal, I get the following error:

python path/filename.py

Traceback (most recent call last):
  File"/Users/xxx/Desktop/Python/test.py", line 5, in <module>
    import pandas aspd
  File"/Library/Frameworks/Python.framework/Version/3.8/lib/python 3.8/site-packages/pandas/_init__.py", line 13
    missing_dependencies.append(f"{dependency}:{e}")
                                                   ^
SyntaxError: invalid syntax

Why SyntaxError for pandas/init.py that never fiddled with the contents?
What I don't know is that import pandas on the Jupiter Notebook works fine.
The module path in the Jupiter Notebook is also Python 3.
I look forward to hearing from you.

Basic Information

OS:Mac
python 3.8

The process of getting an error

Install python environment in Anaconda → Install python 3.8 from official site because !pip could not be done in Jupiter notebook, install pandas, jupyter from terminal → Current status

June 7, 2020 Additional information

$python --version
Python 2.7.16
$python-c'import sys;print(sys.path)'
['', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python27.zip', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload', '/Library/Python/2.7/site-packages', '/System/Library/Frameworks/Python.frameworks/Version/2.7/Extras/lib/python', '/System/Library/Frameworks/Python.frameworks/Version/2.7/Extras/lib/python/PyObjC']

python pandas

2022-09-30 21:49

1 Answers

Solution

python --version points to Python 2.x, which was originally installed on the system.Perhaps the python3 command refers to the newly installed one.

So try running python3, and pip is probably also p3.

I want the python command to point to Python 3 series

If you want Python 3 series to start just by typing python, you can create an alias for the shell command as such._{(python command itself points to Python 3 series, which can break what you expect to use Python 2 series.Enable Python 3 series only in your shell.)}.

In other words, ~/.bash_profile or ~/.zshenv depending on your shell.

 alias python='python'

Restart the shell by writing

However, I personally think that as the dependencies of various libraries become increasingly complicated, you may want to use Python's virtual environment instead of this method (this is where tastes and preferences are divided).

Supplement: Why SyntaxError

Incidentally, missing_dependencies.append(f"{dependency}:{e}") gets SyntaxError because the syntax f"Honyara" is new from Python 3.6 .Looking at this error, I guessed that the python command probably pointed to the Python 2 series preinstalled on the Mac, so I asked the questioner to check the version.

2022-09-30 21:49

If you have any answers or tips

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