第三章程序练习题

3.1

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current_weight = float(input("请输入你当前的地球体重（kg）："))print("\n未来10年体重变化：")
print("年份\t地球体重（kg）\t月球体重（kg）")# 计算并输出每年的体重
for year in range(1, 11):earth_weight = current_weight + 0.5 * yearmoon_weight = earth_weight * 0.165print(f"{year}\t{earth_weight:.2f}\t\t{moon_weight:.2f}")

3.2

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dayup, dayfactor = 1.0, 0.01
for i in range(1, 366):if i % 7 in [0, 6, 5, 4]:dayup = dayup * (1 + dayfactor)else:dayup = dayup 
print("连续学习365天后的能力值是:{:.2f}.".format(dayup)) 

3.3

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dayup, dayfactor = 1.0, 0.01
for i in range(1, 366):if i % 10 in [4,5,6,7]:dayup = dayup * (1 + dayfactor)else:dayup = dayup 
print("若固定每10天休息1天,连续学习365天后的能力值是:{:.2f}.".format(dayup)) 

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dayup, dayfactor = 1.0, 0.01
for i in range(1, 366):if i % 15 in [4,5,6,7,11,12,13,14]:dayup = dayup * (1 + dayfactor)else:dayup = dayup 
print("如果每15天休息1天,连续学习365天后的能力值是:{:.2f}.".format(dayup)) 

3.4

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s = (input("请输入一个五位数:"))
if len(s) == 5 and s.isdigit() and s[0] != '0':if s == s[::-1]:print("是回文数")else:print("不是回文数")
else:print("输入的不是有效的五位自然数")

3.5

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print("+ - - - - + - - - - +")
print("|         |         |")
print("|         |         |")
print("|         |         |")
print("+ - - - - + - - - - +")
print("|         |         |")
print("|         |         |")
print("|         |         |")
print("+ - - - - + - - - - +")