使用pandas read_csv时，仅将分隔符限制为某些选项卡

I'm reading some tab-delimited data into a pandas Dataframe using read_csv, but I have tabs occurring within the column data which means I can't just use "\t" as a separator. Specifically, the last entries in each line are a set of tab delimited optional tags which match [A-Za-z][A-Za-z0-9]:[A-Za-z]:.+ There are no guarantees about how many tags there will be or which ones will be present, and different sets of tags may occur on different lines. Example data looks like this (all white spaces are tabs in my data):I'm reading some tab-delimited data into a pand