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WillKoehrsen / Data-Analysis

Data Science Using Python
https://medium.com/@williamkoehrsen/
MIT License
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medium #56

Open shinokada opened 4 years ago

shinokada commented 4 years ago

I use Python 3.7.7.

When I run 

from retrieval import process_in_parallel, get_table_rows

table_rows = get_table_rows(fname='stats.html')
df = process_in_parallel(table_rows=table_rows, processes=25)
df.head()

It returns these errors.

objc[14401]: +[NSCFConstantString initialize] may have been in progress in another thread when fork() was called. objc[14401]: +[NSCFConstantString initialize] may have been in progress in another thread when fork() was called. We cannot safely call it or ignore it in the fork() child process. Crashing instead. Set a breakpoint on objc_initializeAfterForkError to debug. objc[14411]: +[NSCFConstantString initialize] may have been in progress in another thread when fork() was called. objc[14411]: +[NSCFConstantString initialize] may have been in progress in another thread when fork() was called. We cannot safely call it or ignore it in the fork() child process. Crashing instead. Set a breakpoint on objc_initializeAfterForkError to debug. objc[14412]: +[NSCFConstantString initialize] may have been in progress in another thread when fork() was called. objc[14412]: +[NSCFConstantString initialize] may have been in progress in another thread when fork() was called. We cannot safely call it or ignore it in the fork() child process. Crashing instead. Set a breakpoint on objc_initializeAfterForkError to debug. ... objc[14405]: +[NSCFConstantString initialize] may have been in progress in another thread when fork() was called. objc[14405]: +[NSCFConstantString initialize] may have been in progress in another thread when fork() was called. We cannot safely call it or ignore it in the fork() child process. Crashing instead. Set a breakpoint on objc_initializeAfterForkError to debug.

Do you know anything about how to fix these errors?