- celsius = float(input('输入摄氏温度:'))
- fahrenheit = (9/5)*celsius + 32
- print('%0.1f 摄氏温度转为华氏温度为 %0.1f' % (celsius, fahrenheit))
结果: 
- h, r =map(float, input().split())
-
- # 计算圆柱的底面积和体积
- area = 3.14 * r * r
- volume = area * h
-
- # 输出结果
- print("%.2f"%area)
- print("%.2f"% volume)
注意:map()函数是Python中的一个内置函数,它的功能是:将指定的函数,依次作用于可迭代对象的每个元素,并返回一个迭代器对象。这个可迭代对象,可以是一个也可以是多个。
案例1:可迭代对象传递给map()函数,然后map()函数将这个可迭代对象传入自定义函数。
#自定义一个函数a,返回x*2的值 def a(x): return x*2 #定义列表 lis1=[1,3,5,7,9] #对列表中的每个数运用函数a,返回迭代器 lis1_a=map(a,lis1) #输出迭代器中的值 for num in lis1_a: print(num) #输出结果 ''' 2 6 10 14 18 '''案例2:可迭代对象传递给map()函数,然后map()函数将这个可迭代对象进行数据类型转换。
#定义一个列表a a = ['1','2','3'] #将列表中的每个字符串,转换成浮点型,并返回迭代器 b = map(float,a) #输出迭代器中的值 for num in b: print(num) #输出结果 ''' 1.0 2.0 3.0 '''第二题用的就是案例2里面的map()函数;
案例3:多个可迭代对象传递给map()函数,然后map()函数将这2个迭代对象传入自定义函数a()。注意:这个自定义函数a()的参数个数,要与传入的可迭代对象数量一致。
# 定义一个函数 # 该函数采用2参数 def a(x,y): return x * y # 定义列表1 lis1 = [1, 3, 5, 7, 9] # 定义列表2 lis2 = [2, 4, 6, 8, 10] # 将两个列表中的值,传入函数a,并返回可迭代器 lis_a = map(a, lis1, lis2) #输出迭代器中的值 for num in lis_a: print(num) #输出结果 ''' 2 12 30 56 90 '''
结果:

- feet = eval(input("Enter a value for feet:"))
- meters=feet*0.305
- print(feet,"feet is",meters,"meters")
结果:

- tip, rate = eval(input("enter the tip and a rate:"))
- rate = tip * rate / 100
- total = rate + tip
- print("The rate is", rate, "and the total is", total)
结果:
- num = eval(input("enter a number between 0 and 1000:"))
- gewei = num % 10
- baiwei = num // 100
- shiwei =(num - baiwei*100) // 10
- print("the sum of the digits is", int(gewei+baiwei+shiwei))
结果:
- minute = int(input("enter a number of minute:"))
- year = minute // (24*365*60)
- day = minute % (24*60*365) // (24*60)
- print("the year is", year)
- print("the day is", day)
结果:
- M = float(input("enter a number:"))
- initialTemperature = float(input("enter a number:"))
- finalTemperature = float(input("enter a number:"))
- Q = M * (finalTemperature - initialTemperature) * 4184
- print(f"the Q is", Q)
结果:
- num =input("please enter a number:")
- for i in range(len(num) - 1, -1, -1):
- # print(num[i],end = "\n")
- print(num[i])
注意:len()函数只能用于可以迭代的对象;例如:列表list,元组tuple,字符串str,等;不能用于整数、浮点数等其他类型!
结果:
- import math
- x1, y1, x2, y2, x3, y3 = map(float,input("输入:\n").split())
- first = math.sqrt((x1 - x2)**2 + (y1 - y2)**2)
- second = math.sqrt((x1 - x3)**2 + (y1 - y3)**2)
- third = math.sqrt((x2 - x3)**2 + (y2 - y3)**2)
- s = (first + second + third) / 2
- area = float(math.sqrt(s*(s - first)*(s - second)*(s - third)))
- print("%.1f"%area)
结果:
- import time
-
- print (time.strftime("%Y-%M-%d %A %X %Z",time.localtime(time.time())))
结果:

- import math
- x1, y1, x2, y2, x3, y3 = map(float,input("输入:").split())
- a = math.sqrt((x1 - x2)**2 + (y1 - y2)**2)
- b = math.sqrt((x1 - x3)**2 + (y1 - y3)**2)
- c = math.sqrt((x2 - x3)**2 + (y2 - y3)**2)
- A = math.degrees(math.acos((a*a - b*b - c*c)/(-2*b*c)))
- B = math.degrees(math.acos((b*b-a*a-c*c)/(-2*a*c)))
- C = math.degrees(math.acos((c*c-b*b-a*a)/(-2*a*b)))
- print("%.2f"%A)
- print("%.2f"%B)
- print("%.2f"%C)
注意:math.degrees()函数是将弧度转换为角度;
结果:
- money = float(input("请输入总金额:"))
- a = money // 1
- b = (money - a*1) // 0.25
- c = (money - a*1 - b*0.25) // 0.1
- d = (money - a*1 - b*0.25 - c*0.1) // 0.05
- e = (money - a*1 - b*0.25 - c*0.1 - d*0.05) // 0.01
- print("%d个硬币"%a)
- print("%d个硬币"%b)
- print("%d个硬币"%c)
- print("%d个硬币"%d)
- print("%d个硬币"%e)
结果:

- import math
-
-
- n,s = map(float,input("请输入长和宽:").split())
- area = (n * s * s) / (4 * math.tan(math.pi/n))
- print("%.2f"%area)
结果:

14.计算身体质量指数
- height = float(input("请输入身高:"))
- weight = float(input("请输入体重: "))
- BMI = weight/(height*height)
- if BMI < 18.5:
- print("过轻!")
- elif 18.5 <= BMI <24:
- print("正常!")
- elif 24 <= BMI <27:
- print("过重!")
- elif 27 <= BMI < 30:
- print("中度肥胖!")
- elif 30 <= BMI < 35:
- print("中度肥胖!")
- elif BMI >=35:
- print("重度肥胖!")
结果:

- year=int(input("请输入年份:"))
- if year % 4 == 0 and year % 100 != 0 or year % 400 == 0:
- print("该年为闰年")
- else:
- print("该年是平年")
结果:

- import random
-
-
- num = random.randint(10,100)
- a = int(input("请输入一个两位数:"))
- a1 = num // 10 % 10
- a2 = num % 10
- #是代表num随机数中的第一位和第二位!
- first = a // 10 % 10
- second = a % 10
- print(num)
- if a == num:
- print("你太幸运了,奖励你10000!")
- elif a1 == second and a2 == first:
- print("你也不错!奖励你3000!")
- elif a1 == second or a2 == first or a1 == first or a2 == second:
- print("还不错!奖励你1000!")
- elif a1 != second and a2 != first:
- print("你与奖励擦肩而过!奖励你0元!")

- import math
-
-
- a, b, c = map(float,input("请输入三个值:").split())
- r1 = (-b + math.sqrt(b * b - 4 * a * c)) / (2 * a)
- r2 = (-b - math.sqrt(b * b - 4 * a * c)) / (2 * a)
- if b * b - 4 * a *c > 0:
- print("%.2f"%r1)
- print("%.2f"%r2)
- elif b * b - 4 * a * c == 0:
- print("%.2f"%r1)
- elif b * b - 4 * a * c < 0:
- print("无实数解!")
结果:

- import math
-
-
- a, b, c, d, e, f = map(float,input("请输入三个值:").split())
- x = (e * d - b * f) / (a * d - b * c)
- y = (a * f - e * c) / (a * d - b * c)
- a * x + b * y == e
- c * x + d * y == f
- if a * d - b * c == 0:
- print("无解")
- else:
- print(x)
- print(y)

- a, b= map(int,input("请输入今天星期几和你想要计算的日子:").split())
- if a + b % 7 == 1:
- print("星期一")
- elif a + b % 7 == 2:
- print("星期二")
- elif a + b % 7 == 3:
- print("星期三")
- elif a + b % 7 == 4:
- print("星期四")
- elif a + b % 7 == 5:
- print("星期五")
- elif a + b % 7 == 6:
- print("星期六")
- elif a + b % 7 == 0:
- print("星期天")
结果:

- year, month, day = map(int,input("输入年月日:").split())
- if year % 4 == 0 and year % 100 != 0 or year % 400 == 0:
- if month == 1:
- day1 = day
- print(day1)
- elif month == 2:
- day1 = 31 + day
- print(day1)
- elif month == 3:
- day1 = 31 + 28 + day
- print(day1)
- elif month == 4:
- day1 = 31 + 28 + 31 + day
- print(day1)
- elif month == 5:
- day1 = 31 + 28 + 31 + 30 + day
- print(day1)
- elif month == 6:
- day1 = 31 + 28 + 31 + 30 + 31 + day
- print(day1)
- elif month == 7:
- day1 = 31 + 28 + 31 + 30 + 31 + 30 + day
- print(day1)
- elif month == 8:
- day1 = 31 + 28 + 31 + 30 + 31 + 30 + 31 + day
- print(day1)
- elif month == 9:
- day1 = 31 + 28 + 31 + 30 + 31 + 30 + 31 + 30 + day
- print(day1)
- elif month == 10:
- day1 = 31 + 28 + 31 + 30 + 31 + 30 + 31 + 30 + 31 + day
- print(day1)
- elif month == 11:
- day1 = 31 + 28 + 31 + 30 + 31 + 30 + 31 + 30 + 31 + 30 + day
- print(day1)
- elif month == 12:
- day1 =31 + 28 + 31 + 30 + 31 + 30 + 31 + 30 + 31 + 30 + 31 + day
- print(day1)
- else:
- if month == 1:
- day1 = day
- print(day1)
- elif month == 2:
- day1 = 31 + day
- print(day1)
- elif month == 3:
- day1 = 31 + 29 + day
- print(day1)
- elif month == 4:
- day1 = 31 + 29 + 31 + day
- print(day1)
- elif month== 5:
- day1 = 31 + 29 + 31 + 30 + day
- print(day1)
- elif month == 6:
- day1 = 31 + 29 + 31 + 30 + 31 + day
- print(day1)
- elif month== 7:
- day1 = 31 + 29 + 31 + 30 + 31 + 30 + day
- print(day1)
- elif month == 8:
- day1 = 31 + 29 + 31 + 30 + 31 + 30 + 31 + day
- print(day1)
- elif month == 9:
- day1 = 31 + 29 + 31 + 30 + 31 + 30 + 31 + 30 + day
- print(day1)
- elif month == 10:
- day1 = 31 + 29 + 31 + 30 + 31 + 30 + 31 + 30 + 31 + day
- print(day1)
- elif month == 11:
- day1 = 31 + 29 + 31 + 30 + 31 + 30 + 31 + 30 + 31 + 30 + day
- print(day1)
- elif month == 12:
- day1 = 31 + 29 + 31 + 30 + 31 + 30 + 31 + 30 + 31 + 30 + 31 + day
- print(day1)
-
结果:

- import random
-
-
- a = random.randint(0,2)
- b = int(input("请输入0-2之间的整数(0代表剪刀,1代表石头,2代表步):"))
- print(a)
- if b > 2 or b < 0:
- print("请正确输入!")
-
- elif (a == 0 and b == 1) or (a == 1 and b == 2) or (a == 2 and b == 0):
- print("姐妹真棒哦!")
- elif a == b:
- print("打平")
- else:
- print("啊偶输掉啦!没关系的,我们可以再试试!")
结果: