# 等额本息（均使用基准利率）
# 组合贷可作为课后习题
# 商业贷款利率：4.9%
# 公积金利率：3.25%
# 每月还款额=贷款本金×[月利率×(1+月利率) ^ 还款月数]÷{[(1+月利率) ^ 还款月数]-1}
while True:
loan_type = input("请选择贷款类型：1.商业贷款 2.公积金贷款 3.组合贷款\n")
# 贷款金额
if loan_type != '3':
loan_amount = float(input("请输入贷款金额（万）\n"))
term = int(input("请选择期限（年）：5、10、15、20、25\n"))
if term in [5,10,15,20,25]:
if term==5:
mon_rate = (4.75 / 100) / 12 # 计算月利率
# 计算每月应还金额
mon_pay = loan_amount * 10000 * (mon_rate * ((1 + mon_rate) ** (term * 12))) / (
((1 + mon_rate) ** (term * 12)) - 1)
# 计算还款总额
all_pay = mon_pay * term * 12
# 计算支付利息
interest = all_pay - loan_amount * 10000
print("每月月供参考（元）：{:.2f}元".format(mon_pay))
print("支付利息（元）：{:.2f}元".format(interest))
print("还款总额（元）：{:.2f}元".format(all_pay))
else:
# 商业贷款
if loan_type == '1': # 商业贷款
mon_rate = (4.90 / 100) / 12 # 计算月利率
# 计算每月应还金额
mon_pay = loan_amount * 10000 * (mon_rate * ((1 + mon_rate) ** (term * 12))) / (
((1 + mon_rate) ** (term * 12)) - 1)
# 计算还款总额
all_pay = mon_pay * term * 12
# 计算支付利息
interest = all_pay - loan_amount * 10000
print("每月月供参考（元）：{:.2f}元".format(mon_pay))
print("支付利息（元）：{:.2f}元".format(interest))
print("还款总额（元）：{:.2f}元".format(all_pay))
elif loan_type == '2': # 公积金贷款
if term==5:
mon_rate = (2.75 / 100) / 12 # 计算月利率
else:
mon_rate = (3.25 / 100) / 12 # 计算月利率
# 计算每月应还金额
mon_pay = loan_amount * 10000 * (mon_rate * ((1 + mon_rate) ** (term * 12))) / (
((1 + mon_rate) ** (term * 12)) - 1)
# 计算还款总额
all_pay = mon_pay * term * 12
# 计算支付利息
interest = all_pay - loan_amount * 10000
print("每月月供参考（元）：{:.2f}元".format(mon_pay))
print("支付利息（元）：{:.2f}元".format(interest))
print("还款总额（元）：{:.2f}元".format(all_pay))
else:
print('请输入合法的期限')
else:
# 商贷金额
business_loan = float(input("请输入商业贷款金额（万）：\n"))
# 公积金贷款
fund_loan = float(input("请输入公积金贷款金额（万）：\n"))
term = int(input("请选择期限（年）：5、10、15、20、25\n"))
if term in [5, 10, 15, 20, 25]:
if term ==5:
business_mon_rate = (4.75 / 100) / 12 # 商贷月利率
found_mon_rate = (2.75 / 100) / 12 # 公积金月利率
else:
business_mon_rate = (4.90 / 100) / 12 # 商贷月利率
found_mon_rate = (3.25 / 100) / 12 # 公积金月利率
# 计算商业贷款 每月应还金额
business_mon_pay = business_loan * 10000 * (business_mon_rate * ((1 + business_mon_rate) ** (term * 12))) / (
((1 + business_mon_rate) ** (term * 12)) - 1)
# 计算公积金贷款 每月应还金额
found_mon_pay = fund_loan * 10000 * (found_mon_rate * ((1 + found_mon_rate) ** (term * 12))) / (
((1 + found_mon_rate) ** (term * 12)) - 1)
# 每月总应还
mon_all_pay = business_mon_pay + found_mon_pay
all_pay = mon_all_pay * term * 12
# 计算支付利息
interest = all_pay - (business_loan + fund_loan)*10000
print("每月月供参考（元）：{:.2f}元".format(mon_all_pay))
print("支付利息（元）：{:.2f}元".format(interest))
print("还款总额（元）：{:.2f}元".format(all_pay))
else:
print('请输入合法的期限')size = int(input("请输入棋盘的大小："))
for i in range(size):
for j in range(size):
if i == 0 and j == 0:
print("┏",end='')
elif i == 0 and j == size - 1:
print("┓",end='')
elif i == size - 1 and j == 0:
print("┗",end='')
elif i == size - 1 and j == size - 1:
print("┛",end='')
elif j == 0:
print("┠",end='')
elif i == size - 1:
print("┷",end='')
elif j == size - 1:
print("┨",end='')
elif i == 0:
print("┯",end='')
else:
print("┼",end='')
print('')guess_num = input("请设定要猜的数字：\n")
for frequency in range(1,6):
number = input("请输入第"+str(frequency)+"次猜测的数字:")
if number.isdigit() is False:
print('请输入一个正确的数字')
elif int(number) < 0 or int(number) > 100:
print("请输入1-100范围的数字")
elif int(guess_num) == int(number):
print("恭喜你用了%d次猜对了" % frequency)
break
elif int(guess_num) > int(number):
print("很遗憾，你猜小了")
else:
print("很遗憾，你猜大了")
if frequency == 5:
print("很遗憾，%d次机会已用尽，游戏结束,答案为%d" %
(frequency, int(guess_num)))# 计算器可以进行基础运算（加、减、乘、除）被除数不为0
first = float(input("请输入第一个数："))
second = float(input("请输入第二个数："))
operator = input("请选择运算符：+ - * /:")
if operator == '+':
print(first + second)
elif operator == '-':
print(first - second)
elif operator == '*':
print(first * second)
elif operator == '/':
if second == 0:
print("除数不能为0")
else:
print(first / second)for i in range(1, 101):
# 判断条件：既不包含7，也不是7的倍数
if "7" in str(i) or int(i) % 7 == 0:
# 输出，去掉了换行符
print('*', end="、")
# 如果包含7 输出*
elif "7" not in str(i)and int(i) % 7 != 0 :
print(i, end='、')
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