问题
I have been importing Excel files as Pandas data frames using the read_excel function with no apparent issues so far. However, I just realized that after some recent updates I'm getting the below warning:
/usr/local/lib/python3.7/site-packages/xlrd/xlsx.py:266: PendingDeprecationWarning: This method will be removed in future versions. Use 'tree.iter()' or 'list(tree.iter())' instead.
for elem in self.tree.iter() if Element_has_iter else self.tree.getiterator(): /usr/local/lib/python3.7/site-packages/xlrd/xlsx.py:312: PendingDeprecationWarning: This method will be removed in future versions. Use 'tree.iter()' or 'list(tree.iter())' instead.
for elem in self.tree.iter() if Element_has_iter else self.tree.getiterator():
Searching the internet, it seems that the xlrd is being replaced by openpyxl. Now my questions are:
- What does this warning mean and what should I do?
- Is my data import safe at this moment? Do I have to worry that something not working properly?
- What are those
tree.iter()orlist(tree.iter())methods? and what they are replacing? - Is there another method to import Excel files as pandas data frames without getting this warning already?
- Should I report a bug or issues somewhere? Where?
my environment is:
- macOS Mojave 10.14.6
- Python 3.7.6
- Pandas 1.0.0
- xlrd 1.2.0
回答1:
Your data import is "safe" at the moment. To get rid of the warning and future-proof your code, try:
pd.read_excel(filename, engine="openpyxl")
or put this at the start of your script:
import pandas as pd
pd.set_option("xlsx", "openpyxl")
来源：https://stackoverflow.com/questions/60288732/pandas-read-excel-returns-pendingdeprecationwarning