问题
Is there a way to add a "tag" (add a unique metadata/identifier) to a CSV file without affecting the contents or ability to read/write the file?
I am using Python, but I don't think the language matters here.
回答1:
Just add comment lines that you can parse later.
#Creator:JohnSmith
#Date:....
#Columns:id,username,...
1,JohnSmith
2, ..
回答2:
This would be compliant with W3C embedded metadata format: http://www.w3.org/TR/tabular-data-model/#embedded-metadata
#publisher,W3C
#updated,2015-10-17T00:00:00Z
#name,sensor,temperature
#datatype,string,float
sensor,temperature
s-1,25.5
回答3:
In case you are not sure that all possible readers/writers of the file will be able to interpret (and preserve) comments, create the tag in a second file using some name convention that links them. Example:
myCSVFile.csv
myCSVFile.csv.tag
来源：https://stackoverflow.com/questions/18362864/adding-metadata-identifier-data-to-a-csv-file