(1)利用循环语句求立方和
代码语言：javascript复制#1.利用循环语句,求1-100的立方和
sum = 0
i = 0
while i < 101:
sum = i**3
i = i 1
print(sum)#做法2: for 循环
s = 0
for i in range(1,101):
s = s i**3
print(s)(2)求斐波那契数列的第n项值
#2. 求第 n 个斐波那契数列的值
a = 1
b = 1
i = 1
n = int(input())
while n > i:
a,b = b,a b
n -= 1
print(a)#解法2
n = int(input())
a,b,i = 1,1,1
while i < n:
a, b = b, a b
i = 1
print(a)#解法3
n = int(input())
a,b = 1,1
for i in range(1,n):
a,b = b,a b
print(a)因为枚举n项打印的是第n - 1项,所以我们最后print(a)
(3)for 循环遍历每一个字符的方法
代码语言：javascript复制#方法1:
for c in "python":
print(c,end=" ")
print()
#方法2:
s = "piggylin"
for c in s:
print(c,end=" ")
