Not enough values to unpack (expected 2, got 1) solution during Python learning

This is an article in the process of self-study debug The notes .
May we make progress together .

Problem description

Learn with little turtle Python, In learning to “ file ” When there is a code task , The content is the segmentation and extraction operation based on three dialogues between two characters . Run time error , The main error reported is not enough values to unpack (expected 2, got 1).

(role,line_spoken) = each_line.split('：',1) # Separated by question marks ,1 Stands for split 
ValueError: not enough values to unpack (expected 2, got 1)

Not enough values to decompress , Expected two values , Actually got a value .

Cause of error and solution

1. Chinese and English symbols are confused and error is reported . This error command appears , Probably because of split The colon in the command is wrong , The colon in Chinese is shaped like ：, And in English :, There is still a big difference .
   》》 Check out your TXT Is the document Chinese or English colon , The two correspond
2. There is extra space . This error reporting reason is still relatively difficult to be found , I made this mistake from the beginning , because TXT The default when the document is copied , There are a few blank lines at the end of the document .
   》》 Look at the cursor position , Delete the blank line