如何在Python中用点号分隔最后两位数字

Question

I always want to separate the last two digits with a decimal point . (dot)L

print("{:.2f}".format(300));

Output:

300.00

Expected output:

3.00

Next

print("{:.2f}".format(333333300));

Output:

333333300.00

Expected output:

3333333.00

How can I change my code so that I get the expected output instead?

Answer 1

300.00 is a representation of number 300 . 3.00 is a representation of number 3 . Those are two different values. There is no way Python will represent 300 as 3 .

Assuming you really want to print 3.00 (which for pretty much everyone around means 3 , not 300 ), then you should divide 300 by 100 .

print("{:.2f}".format(300/100.0))

Answer 2

Use the number value you actually want to output, ie don't add the '0' you want in the string representation.

print("{:.2f}".format(3))

It is the string formatting which does add the '0' for you when it creates the string representation of the number value, depending on the specified formatting string.

Answer 3

def f(n):
    a = divmod(n,100)
    if a[1] < 10:
         print("{}.0{}".format(a[0],a[1]))
    else:
        print("{}.{}".format(a[0],a[1]))

Answer 4

In Python 2.6 :

def myPrint(x):
    print("{0:.2f}".format(x/100.00));

myPrint(2990);

29.90