当运行pandas时，"无法导入名称QUOTE_MINIMAL"。

Question

我刚刚在pycharm上下载了pandas，就像通常下载一个模块一样。当运行这段代码时 import pandas我只得到以下错误信息

Traceback (most recent call last):
  File "/Users/walid/Documents/Python/pandas/csv.py", line 1, in <module>
    import pandas
  File "/Users/walid/.conda/envs/Python/lib/python3.7/site-packages/pandas/__init__.py", line 145, in <module>
    from pandas.io.api import (
  File "/Users/walid/.conda/envs/Python/lib/python3.7/site-packages/pandas/io/api.py", line 8, in <module>
    from pandas.io.excel import ExcelFile, ExcelWriter, read_excel
  File "/Users/walid/.conda/envs/Python/lib/python3.7/site-packages/pandas/io/excel/__init__.py", line 1, in <module>
    from pandas.io.excel._base import ExcelFile, ExcelWriter, read_excel
  File "/Users/walid/.conda/envs/Python/lib/python3.7/site-packages/pandas/io/excel/_base.py", line 9, in <module>
    from pandas._libs.parsers import STR_NA_VALUES
  File "pandas/_libs/parsers.pyx", line 12, in init pandas._libs.parsers
ImportError: cannot import name QUOTE_MINIMAL

我也试过在终端机上安装，使用的是 pip install pandas但后来我得到了。

Requirement already satisfied: pandas in /Users/walid/.conda/envs/Python/lib/python3.7/site-packages (1.0.3)
Requirement already satisfied: numpy>=1.13.3 in /Users/walid/.conda/envs/Python/lib/python3.7/site-packages (from pandas) (1.18.1)
Requirement already satisfied: pytz>=2017.2 in /Users/walid/.conda/envs/Python/lib/python3.7/site-packages (from pandas) (2019.3)
Requirement already satisfied: python-dateutil>=2.6.1 in /Users/walid/.local/lib/python3.7/site-packages (from pandas) (2.8.1)
Requirement already satisfied: six>=1.5 in /Users/walid/.conda/envs/Python/lib/python3.7/site-packages (from python-dateutil>=2.6.1->pandas) (1.14.0)

问题可能出在哪里？我是pandas新手，但在pycharm上安装模块从来没有遇到过问题。