PySchools - 主题1问题7

Question

我在PySchools.com上运行Python的一些做法并被困在这里。我确信这是一项简单的任务。任何人吗？

您可以使用len（x）函数来查找字符串中的字符数。

实施例

>>> greetings = "Hello World"
>>> len(greetings) # get the length of string
11
>>> greetings[0] # get the 1st character
'H'

下面的问题：

greeting = "Hello Google!"
# number of characters stored in the variable greeting
number_of_char = len(greeting)

# repeat the greetings based on the number of character in 'greeting'
greetings =

http://www.pyschools.com/quiz/view_question/s1-q7

Answer 1

您可以将字符串乘以整数，以便多次重复该字符串。

>>> 'abc' * 2
'abcabc'

Answer 2

您可以通过将num_of_char乘以问候语

来完成此操作

greetings = number_of_char * greeting

Answer 3

greetings = "Hello Google"
repeated_greetings = len(greetings) * greetings
print repeated_greetings

  

    

＆GT;     'Hello GoogleHello GoogleHello GoogleHello GoogleHello GoogleHello GoogleHello GoogleHello GoogleHello GoogleHello GoogleHello GoogleHello Google'