BUG: read_csv/table raising when sys.setprofile used
- [x] closes #41069
- [x] tests added / passed
- [x] Ensure all linting tests pass, see [here](https://pandas.pydata.org/pandas-docs/dev/development/contributing.html#code-standards) for how to run them
- [x] whatsnew entry

According to https://docs.python.org/3/library/functions.html#locals, `locals()` should not be modified. AFAICT these are the only places `locals()` is used in this way without copying.
good catch. thanks @mzeitlin11  With sys.setprofile, read_csv breaks when the data frame is saved using a different separator such as (sep='µ')

df.to_csv('df.csv', index=False, sep='µ')
pd.read_csv('df.csv', sep='µ', engine='python') #setprofile breaks this. separator not recognized.