将前导0添加到数据框中的数据列

Question

Existing data in data frame has dropped leading zero which is required as a part number. The number stored, needs to be 8 digits long and now they vary based on the removal of the leading 0's

Sorry I am new to Python and this may be built in function in Pandas but I have not found a way to convert this type of formatting. I have over 2000 part numbers to convert over all

EG:

Part No
9069
38661
90705
9070
907
970206

Part number needs to be:

Part No
00009069
00038661
00090705
00009070
00000907
00970206

Answer 1

在使用astype之前，请使用zfill ，如下所示：

df['Part'].astype(str).str.zfill(8)