Python：使用格式字符串时打印多行

Question

When I try to print multi-lines with format string in python, the bash show the error like that:

a = 'tony'
b = '20'
print ("I am %s\n"+
       "I am %s years old\n"
       % (a,b))

TypeError: not all arguments converted during string formatting

I'm wondering what's wrong with that and what's the right way to use format string to print multi-lines.

---

if i write code like this, it'll output correctly. However, the single line code will be too long, that's not what I want.

print ("I am %s\nI am %s years old\n" % (a,b))

Answer 1

You need line continuation here, use \\

Try this :

a = 'tony'
b = '20'
print("I am %s\n" \
      "I am %s years old\n" \
       % (a,b))

I am tony
I am 20 years old

or you can just remove +

print("I am %s\n"
      "I am %s years old\n"
       % (a,b))

I am tony
I am 20 years old