2025.10.29Python笔记

#遍历字符串
for letter in "python":
    print(letter)

#遍历列表
f = ["apple","banana",2,["apple_1"]]
for i in f :
    print(i)

#range()函数.生成数字序列
#1、range(n)：单参数，生成0到n-1的序列
for i in range(5):
    print("我在学习while循环")
    print(i)

#2、range(a,b):双参数，生成a到b-1的序列[a,b)
total = 0
for count in range(101):
    print(count)
    total += count
print("总和：",total)

#3.range(a,b,step):三参数，生成a到b-1、步长为step的序列
total = 0
for count in range (2,101,2):
    total = count + total
    print("偶数总和：",total)

for i in range(1,10):
    for j in range(1,i+1):
        print(f"{i}*{j}={i*j}",end=" ")
    print()