用python实现从1加到100的三种方法: for循环，while循环，导入模块法

def sumStartToEnd(start,end):
sum = 0
for n in range(start,end+1,1):
sum = sum + n
return sum

#if __name__ == '__main__' :
print(sumStartToEnd(1,10000))

def sum():
sum = 0
for n in range(1,101):
sum = sum + n
return sum

print(sum())

def sum():
sum = 0
x=1
while x < 101:
sum = sum + x
x+=1
return sum
print(sum())

def sum(x, y):
return x + y
from functools import reduce
print(reduce(sum, range(1,101)))