Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
351 views
in Technique[技术] by (71.8m points)

python - Why does multiplication repeats the number several times?

I don't know how to multiply in Python.

If I do this:

price = 1 * 9

It will appear like this:

111111111

And the answer needs to be 9 (1x9=9)

How can I make it multiply correctly?

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Answer

0 votes
by (71.8m points)

Only when you multiply integer with a string, you will get repetitive string..

You can use int() factory method to create integer out of string form of integer..

>>> int('1') * int('9')
9
>>> 
>>> '1' * 9
'111111111'
>>>
>>> 1 * 9
9
>>> 
>>> 1 * '9'
'9'
  • If both operands are ints, you will get multiplication of them as int.
  • If one operand is an int and the other is a string, then the string will be repeated the number of times specified by the int.

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

2.1m questions

2.1m answers

60 comments

57.0k users

...