02241107班编程题 切片逆序大小写等

切片

csv

ls = [("k", 97), ("a", 86), ("b", 66)]
# io
# 字符串的操做
# K:97,a:86,b:66
s = ""
temp = "{}:{},"
for tup in ls:
    value = temp.format(tup[0], tup[1])
    s += value

print(s)

s2 = s.strip(",")
print(s2)

# 利用io来保存
f = open("题目要求的名字.txt", "w", encoding="utf8")
f.write(s2)
f.close()

倒的数字三角形

eval

s = "1"
int_s = int(s)
print(int_s + 1)

eval_s = eval(s)
print(eval_s + 100)

str_d = "{'name': 'zs', 'age': 15}"
d = eval(str_d)
print(d)
print(type(d))

结巴分词

cut(内容)
lcut(内容)
lcut_for_search(内容)

逆序大写逗号分隔

画图 四个正方形

import turtle

n = 4
for i in range(n):
    turtle.pendown()
    for i in range(4):
        turtle.fd(40)
        turtle.right(90)
    turtle.penup()
    turtle.fd(80)

turtle.done()

云图

第四节课