Python打印出浮点数或整数

Question

如果结果为小数，如何打印浮点数；如果结果没有小数，如何打印整数？c = input("Enter the total cost of purchase: ")bank = raw_input("Enter the bank of your credit card (DBS, OCBC, etc.): ")dbs1 = ((c/float(100))*10)dbs2 = c-dbs1ocbc1 = ((c/float(100))*15)ocbc2 = c-ocbc1if (c > 200):    if (bank == 'DBS'):        print('Please pay $'+str(dbs2))    elif (bank == 'OCBC'):        print('Please pay $'+str(ocbc2))    else:        print('Please pay $'+str(c))else:    print('Please pay $'+str(c))exit = raw_input("Enter to exit")示例结果Enter the total cost of purchase: 250Enter the bank of your credit card (DBS, OCBC, etc.): OCBCPlease pay $212.5Enter the total cost of purchase: 250Enter the bank of your credit card (DBS, OCBC, etc.): DBSPlease pay $225.0

Answer 1

您可以尝试使用简单的Python字符串格式化方法：

if int(c) == float(c):

    decimals = 0

else:

    decimals = 2 # Assumes 2 decimal places for money

print('Please pay: ${0:.{1}f}'.format(c, decimals))

如果满足以下条件，则将为您提供以下输出c == 1.00：

Please pay: $1

或此输出，如果c == 20.56：

Please pay: $20.56

Answer 2

def nice_print(i):

    print '%.2f' % i if i - int(i) != 0 else '%d' % i

nice_print(44)

44

nice_print(44.345)

44.34

在您的代码中：

def nice_number(i):

    return '%.2f' % i if i - int(i) != 0 else '%d' % i

c = input("Enter the total cost of purchase: ")

bank = raw_input("Enter the bank of your credit card (DBS, OCBC, etc.): ")

dbs1 = ((c/float(100))*10)

dbs2 = c-dbs1

ocbc1 = ((c/float(100))*15)

ocbc2 = c-ocbc1

if (c > 200):

    if (bank == 'DBS'):

        print('Please pay $'+nice_number(dbs2))

    elif (bank == 'OCBC'):

        print('Please pay $'+nice_number(ocbc2))

    else:

        print('Please pay $'+nice_number(c))

else:

    print('Please pay $'+nice_number(c))