Python进阶之for单循环

# Work hard and try agin. Done is better than perfect.

# 进行for 循环的学习
for i in range(1,4):
    print('i=',i) # 步长默认1，取1不取4
print('------------')
s=0
for i in range(1,5,2):
    s = s+1
    print('i=',i) # 步上默认2，取1不取5
    print('s=',s)
print('------------')
for i in range(5,1,-1):
    print("i=",i) # 取5不取1
执行结果：

----------------------------------------流程图----------------------------------------------

s = 0
for i in range(1,5):
    s = s + i
print(s)

执行结果：

+++流程图+++