Day5

For loop with list

sum( ) to calculate the total figures of the list

for loop will run any times the number of the item 

有时候我们只需要它赋值的次数罢了。

= assign

== check

For loop independently used using for loop in range function

for number in range(1,10):
   print(number)

range(a,b)不包括b 中间的间隔用range（1，10，2）

How to join strings together randomly in python?​ ​                      ​​​​​list - Joining Strings Together Randomly in Python - Stack Overflowhttps://stackoverflow.com/questions/48650477/joining-strings-together-randomly-in-python