三角形周长及面积
输入的三角形的三条边a、b、c 的长度，计算并依次输出三角形的周长和面积，结果严格保留2位小数。测试用例的数据保证三角形三边数据可以构成三角形。
输入格式： 分三行输入 3 个浮点数，表示三角形的三个边长
输出格式： 三角形的周长和面积，格式参考示例
import math
a, b, c = float(input()), float(input()), float(input())
print('周长={:.2f}'.format(a + b + c))
s = (a + b + c)/2.0
print('面积={:.2f}'.format(math.sqrt(s * (s - a) * (s - b) * (s - c))))a除以b
计算a除以b，结果四舍五入，保留2位小数。
输入格式： 输入包括两行, 每行一个实数, b不能等于0
输出格式： 正常计算结果为一个实数，当用户输入b为0时输出"除零错误"
a, b = int(input()), int(input())
if b == 0:
print('除零错误')
else:
print(round(a / b, 2))2的n次方
计算2的n次方，n由用户输入
输入格式： 输入一个正整数
print(2 ** int(input()))计算阶乘
输入一个正整数，输出其阶乘值。
输入格式： 输入一个正整数
输出格式： 输出阶乘结果
def s(n):
if n == 1:
return 1
return n * s(n -1 )
print(s(int(input())))无空隙回声输出
输入："Python 是 一个 通用语言"
输出："Python是一个通用语言"print(input().replace(' ', ''))字符串分段组合
输入："Alice-Bob-Charis-David-Eric-Flurry"
输出："Alice+Flurry"ls = input().split('-')
print(ls[0] + '+' + ls[-1])字符串格式化输出
a = input("")
s = "PYTHON"
print("{:{}^30}".format(s,a))求所有素数
import math
for i in range(1, 101):
for j in range(2, int(math.sqrt(i)) + 1):
if i % j == 0:
break
else:
print(i, end=' ')数字不同数之和
获得用户输入的一个整数N，输出N中所出现不同数字的和。
例如：用户输入 123123123，其中所出现的不同数字为：1、2、3，这几个数字和为6。
li, res = list(map(int, set(input()))), 0
for i in li:
res += i
print(res)验证码较验
if input().lower() == 'Qs2X'.lower():
print('验证码正确')
else:
print('验证码错误，请重新输入')大小写转换
import string
for i in input():
if i in string.ascii_lowercase:
print(i.upper(), end='')
elif i in string.ascii_uppercase:
print(i.lower(), end='')
else:
print(i, end='')查找指定字符
a, b= input(), input()
print('index = {}'.format(b.rfind(a))) if a in b else print('Not Found')凯撒加密
import string
a, b = input(), int(input())
letter = string.ascii_letters
low, upp = string.ascii_lowercase, string.ascii_uppercase
after = low[b:] + low[:b] + upp[b:] + upp[:b]
print(a.translate(''.maketrans(letter, after)))身份证号处理
ids = input()
year = ids[6:10]
sex = '女' if int(ids[16]) % 2 == 0 else '男'
print('你出生于{}年{}月{}日'.format(year, ids[10:12], ids[12:14]))
print('你今年{}周岁'.format(2020- int(year)))
print('你的性别为{}'.format(sex))快乐的数字
import time
num, start = int(input()), time.perf_counter()
while num != 1:
if time.perf_counter() - start > 1.9:
break
li, num = list(str(num)), 0
for i in li:
num += int(i) ** 2
print(True) if num == 1 else print(False)列表插入
输入一个字符串 s 和一个非负整数 i, 列表 ls = [‘2’, ‘3’, ‘0’, ‘1’, ‘5’]，在指定的位置 i 和 列表末尾分别插入用户输入的字符串 s。当 i >=5 时，相当于在列表末尾插入两次字符串 s 。
输入格式：
第一行输入一个字符串
第二行输入一个非负整数
输出格式： 插入新数据后的列表
ls = ['2', '3', '0', '1', '5']
n, i = input(), int(input())
if i >= 0:
ls.insert(i,n)
ls.append(n)
print(ls)列表排序
ls = list(input())
ls.sort()
print(ls)生成随机密码
import random
random.seed(0x1010)
pw = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890!@#$%^&*'
e = ''
while len(e) < 10:
val = ''
while len(val) < 10:
val += random.choice(pw)
if val[0] in e:
continue
else:
e += val[0]
print(val)杨辉三角形
ls = []
for i in range(10):
if i == 0:
ls.append([1])
elif i == 1:
ls.append([1, 1])
else:
temp = []
for j in range(i + 1):
if j == 0 or j == i:
temp.append(1)
else:
temp.append(ls[i - 1][j] + ls[i - 1][j - 1])
ls.append(temp)
for i in ls:
for j in i:
print(j,end=' ')
print()分期付款计算器
loan, num, ty, rate = float(input()), int(input()), input(), float(input())
ls = []
if ty == 'ACPI':
res = loan * rate * (1 + rate) ** num / ((1 + rate) ** num - 1)
print(round(res, 2))
elif ty == 'AC':
total = 0
for i in range(num):
res = loan / num + (loan - total) * rate
ls.append(round(res, 2))
total += loan / num
print(ls)
else:
print('还款方式输入错误')模拟布朗运动
import math
import random
random.seed(int(input()))
ls, x, y = [(0,0)], 0, 0
dm, hm = [1, -1], [i for i in range(1, 11)]
for i in range(5):
dx = random.choice(dm)
hx = random.choice(hm)
dy = random.choice(dm)
hy = random.choice(hm)
x += dx * hx
y += dy * hy
ls.append((x, y))
print(ls)
res, x, y = 0, 0, 0
for a, b in ls[1:]:
res += math.sqrt((a - x) ** 2 + (b - y) ** 2)
x, y = a, b
print(round(res, 2))排序输出字典中数据
输入格式： 输入一个正整数n
输出格式： 输出指定个数的排序后的元素
dic1 = {'Tom':21,'Bob':18,'Jack':23,'Ana':20}
dic2 = {'李雷':21,'韩梅梅':18,'小明':23,'小红':20}
def printMsg(dic, n):
if n >= len(dic):
print(dic)
else:
print(dic[:n])
n = int(input())
printMsg(sorted(dic1.keys(), key=lambda x: x[0], reverse=False), n)
printMsg(sorted(dic2.items(), key=lambda x: x[1], reverse=False), n)用户转账
dic={"aaa":["123456",10000],"bbb":["888888",5000],"ccc":["333333",3000]}
name = input()
target = dic.get(name)
self_ = dic.get('aaa')
if target is None:
print('Wrong User')
else:
value = int(input())
if value > target[1]:
print('Insufficient Funds')
else:
print('Tranfer Success')
self_[1] -= value
target[1] += value
print('aaa:' + str(self_[1]))
print(name + ':' + str(target[1]))用户登录（字典）
dic={"aaa":["123456",10000],"bbb":["888888",5000],"ccc":["333333",3000]}
target = dic.get(input())
if target is None:
print('Wrong User')
else:
for i in range(3):
pwd = input()
if target[0] == pwd:
print('Success')
break
else:
if i < 2:
print('Fail,{} Times Left'.format(2 - i))
else:
print('Login Denied')走马灯数
for i in range(123456, 987655):
if len(set(str(i))) < 6:
continue
for j in range(1, 7):
if set(str(i)) - set(str(i * j)):
break
else:
print(i)集合元素删除
s = set(list(map(int,input().split())))
if max(s) > 30 or min(s) < 0 or len(s) == 0:
exit()
for i in range(int(input())):
try:
ins = input().split()
if ins[0] == "pop":
s.pop()
if ins[0] == "remove":
s.remove(int(ins[1]))
if ins[0] == "discard":
s.discard(int(ins[1]))
except:
pass
else:
print(sum(s))罗马数字转换
dic = {"I": 1, "V": 5,"X": 10, "L": 50,"C": 100,"D": 500,"M": 1000}
str, sum = input(), 0
for i in range(len(str) - 1):
if dic[str[i]] < dic[str[i + 1]]:
sum -= dic[str[i]]
else:
sum += dic[str[i]]
sum += dic[str[-1]]
print(sum)查找特征数（集合/列表）
li, res = list(map(int, input().split())), -1
for i in set(li):
if i == li.count(i) and i > res:
res = i
print(res)各位数字之和为5的数
for i in range(int(input()) + 1):
if sum(map(int, list(str(i)))) == 5:
print(i, end=' ')月份缩写（一）
i = int(input())
months = "Jan.Feb.Mar.Apr.May.Jun.Jul.Aug.Sep.Oct.Nov.Dec."
if 1<= i <= 12:
print("{}.".format(months.split('.')[i - 1]))字符串加密
import string
ls = list(input())
low = string.ascii_lowercase
upp = string.ascii_uppercase
i = 0
for char in ls:
if char.isalpha():
if char.islower():
ls[i] = low[(low.find(char) + 3) % len(low)]
if char.isupper():
ls[i] = upp[(upp.find(char) + 5) % len(upp)]
i += 1
print(''.join(ls))念数字
输入一个整数，输出每个数字对应的拼音。当整数为负数时，先输出fu字
ls = ['ling', 'yi', 'er', 'san', 'si', 'wu', 'liu', 'qi', 'ba', 'jiu', 'fu']
res = []
for i in input():
if i.isdigit():
res.append(ls[int(i)])
else:
res.append(ls[-1])
print(' '.join(res))判断火车票座位
a = input()
if 2 <= len(a) <= 3:
if a[:-1].isdigit() == 1 and 1 <= int(a[:-1]) <= 17:
if a[-1].lower() in ['a', 'f']:
print("窗口")
elif a[-1].lower() in ['c', 'd']:
print("过道")
elif a[-1].lower() == 'b':
print("中间")
else:
print("输入错误")
else:
print("输入错误")
else:
print('输入错误')身份证号校验
ls = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2]
ids, res = input().strip(), 0
for i in range(len(ls)):
res += int(ids[i]) * ls[i]
if ids[-1] == 'X':
if res % 11 == 2:
print('身份证号码校验为合法号码!')
else:
print('身份证校验位错误!')
elif (res % 11 + int(ids[-1])) % 11 == 1:
print('身份证号码校验为合法号码!')
else:
print('身份证校验位错误!')个人数据脱敏
n = int(input())
if n <= 0:
print('ERROR')
else:
ls = [input().split() for i in range(n)]
for i in ls:
i[0] = i[0][:4] + '*' * 7 + i[0][11:]
i[1] = i[1][:1] + '*' + i[1][2:]
i[2] = i[2][:3] + '*' * 4 + i[2][7:]
print(ls)反素数
def prime(n):
if n <= 1:
return 0
for i in range(2, int(n ** (1/2)) + 1):
if n % i == 0:
return 0
return 1
n, count, i = int(input()), 0, 2
while True:
if prime(i) and prime(int(str(i)[::-1])) and str(i) != str(i)[::-1]:
print(i, end=' ')
count += 1
if count == n:
break
i += 1编写函数输出自除数
def func(right):
for num in range(1, right + 1):
if '0' in str(num):
continue
for i in str(num):
if num % int(i) != 0:
break
else:
print(num, end=' ')
func(int(input()))任意累积
# 请在...补充一行或多行代码
def cmul(*s):
sum = int(s[0])
for i in s[1:]:
sum *= int(i)
return sum
print(eval（"cmul({})".format(input())))贪心的交易（函数）
import random
def f(prices):
print(prices)
i, res = 0, 0
while i + 1 < len(prices):
if prices[i + 1] > prices[i]:
res += prices[i + 1] - prices[i]
i += 1
return res
#下方实现代码，输入列表长度以及随机种子参数，并设定随机种子
n = int(input())
random.seed(int(input()))
ls=[random.randint(1,100) for i in range(0,n)] #构造价格列表，本行无需修改，
print(f(ls)) #输出结果，本行无需修改统计文件中的中文字数
with open(input(), 'r',encoding='utf-8') as fp:
count = 0
for i in fp:
for ch in '，。？！@#￥%……&*；（:; ） ——+|、·：“”’‘\n':
i = i.replace(ch, '')
count += len(i)
print(count)文件中数据转列表
with open('xrdfile.txt','r',encoding='utf-8') as fp:
ls = [list(map(int,map(float,i.strip().split('\t')))) for i in fp]
print(ls[:int(input())])利用数据文件统计成绩
data = open('成绩单.csv','r', encoding='utf-8')
total, n = [0 for i in range(6)], int(input())
score = sorted([i.strip().split(',') for i in data.readlines()], key=lambda x:float(x[-1]))
print('最低分{}分,最高分{}分'.format(score[0][-1], score[-1][-1]))
if n > len(score):
n = len(score)
print(score[:n])
print(score[-n:])
for i in range(len(total)):
for j in score:
total[i] += float(j[i + 3])
print(list(map(lambda i: round(i / len(score), 2), total)))
data.close()文本分析与加密
def change(ch, n):
tem = ord('a')
if ch.isupper():
tem = ord('A')
return chr(tem + (ord(ch) - tem + n) % 26)
count = 0
for i in input():
count = (ord(i) + count) % 26
with open('mayun.txt', 'r', encoding='utf-8') as fp:
content, val = fp.readlines(), ''
upp = low = num = space = other = words = 0
for i in content:
for j in i:
if j.isalpha():
val += change(j, count)
if j.isupper():
upp += 1
else:
low += 1
else:
val += j
if j.isdigit():
num += 1
elif j.isspace():
space += 1
else:
other += 1
words += len(i.replace(',','').replace('.','').replace("'",'').split())
print(upp, low, num, space, other)
print('共有{}单词'.format(words + 1))
print(count)
print(val)身份证号批量升位
# 模板仅供参考，可不按些模板写代码
def id15218(id15):
# 在这里写你的代码
li = '7 9 10 5 8 4 2 1 6 3 7 9 10 5 8 4 2'.split(' ')
ecc = '1 0 X 9 8 7 6 5 4 3 2'.split(' ')
sum, j = 0, 0
id17 = id15[:6] + '20' + id15[6:]
if int(id15[6:8]) >= 5:
id17 = id15[:6] + '19' + id15[6:]
for i in id17:
sum += int(i) * int(li[j])
j += 1
id18 = id17 + ecc[sum % len(ecc)]
return id18
n = int(input())
with open('id15.txt','r',encoding='utf-8') as file:
for i in range(n):
line = file.readline() # line 的内容是文件中的一行，字符串类型
# 在这里写你的代码
print(line.replace(line[:15], id15218(line[:15])).strip())手机销售统计
f18 = open('sale2018.csv','r',encoding='utf-8')
f19 = open('sale2019.csv','r',encoding='utf-8')
f18 = sorted(list(map(lambda x:x.split(',')[0],f18.read().splitlines())))
f19 = sorted(list(map(lambda x:x.split(',')[0],f19.read().splitlines())))
n = int(input())
if n == 1:
print(f19)
print(f18)
elif n == 2:
res = list(set(f19).intersection(f18))
res.sort()
print(res)
elif n == 3:
res = list(set(f19).union(f18))
res.sort()
print(res)
elif n == 4:
res = list(set(f19).difference(f18))
res.sort()
print(res)
elif n == 5:
re = list(set(f19).difference(f18))
re.extend(list(set(f18).difference(f19)))
print(re)一道题练会加减乘除和乘方
import math
n1 = input()
n2 = input()
print("{}+{}={}".format(n1, n2, eval（n1) + eval（n2)))
print("{}-{}={}".format(n1, n2, eval（n1) - eval（n2)))
print("{}*{}={}".format(n1, n2, eval（n1) * eval（n2)))
print("{}/{}={:.2f}".format(n1, n2, eval（n1) / eval（n2)))
print("{}除以{}的整数商={}".format(n1, n2, int(eval（n1) / eval（n2))))
print("{}除以{}的余数为={}".format(n1, n2, eval（n1) % eval（n2)))
print("{}的{}次方={}".format(n1, n2, int(math.pow(eval（n1), eval（n2)))))输入3个数字，由小到大输出
ls = []
while len(ls) < 3:
ls.append(input())
ls.sort(key=lambda x: eval（x), reverse=False)
for i in ls:
print(i)整数逆位运算
n = input()
if eval（n) >= 0:
print(int(n[::-1]))
else:
print(int('-' + n[1:][::-1]))找数字，做加法
ls = ['', '']
for i in range(2):
for j in input():
if j.isnumeric():
ls[i] += j
print(eval（ls[0]) + eval（ls[1]))数字不同数之和
print(sum(list(set(map(int,input())))))鸡兔同笼B
ls = []
for i in range(int(input())):
feet = eval（input())
if feet<=0 or feet%2 != 0:
min = max = 0
else:
l = feet / 4;
f = feet % 4 / 2
min = l + f
max = feet/2
ls += [(min, max)]
for a,b in ls:
print(int(a),int(b))侯先生爬楼梯
a, b = 0, 1
for i in range(int(input())):
a, b = b, a + b
print(b)字符串分段组合
s = input().split('-')
print(s[0] + '+' + s[-1])103
参照代码模板完善代码，实现下述功能。文件 data.txt 文件中有多行数据，打开文件，读取数据，并将其转化为列表。统计读取的数据，计算每一行的总和、平均值，在屏幕上输出结果。
文件内容示例如下：
Chinese: 80,Math:85,English:92, Physical: 81,Art:85,Chemical:88
屏幕输出结果示例如下：总和是：511.0，平均值是：85.17
#请在...上填写多行代码
#可以修改其他代码
fi = open("data.txt", 'r')
for l in fi:
l = l.split(',')
s = 0.0
n = len(l)
for item in l:
ll = item.split(":")
s += float(ll[1])
print("总和是：{}，平均值是：{:.2f}".format(s,s/n))
fi.close()