在python列表中格式化字符串

Question

I have a list which should contain string with a particular format or character ie {{str(x), str(y)},{str(x), str(y)}} . I tried to do string concat like: "{{"+str(x), str(y)+"},{"+str(x), str(y)+"}}" and append to list, but it gets surrounded by brackets: [ ({{str(x), str(y)}),({str(x), str(y)}}) ] How can I get rid of the brackets or betterstill, is there a better approach to having a list without brackets like this: [{{string, string},{string, string}}]

Answer 1

The parentheses are because you're creating a tuple of three items:

• "{{"+str(x)
• str(y)+"},{"+str(x)
• str(y)+"}}"

Try replacing those bare commas between str(x) and str(y) with +","+ :

"{{"+str(x)+","+str(y)+"},{"+str(x)+","str(y)+"}}"