Reputation: 35

how to use format specifier on string in python

I want to use format specifier on numbers in string

Alist = ["1,25,56.7890,7.8"]

tokens = Alist[0].split(',')

for number in tokens:
    print "%6.2f" %number ,

Outcome: It gives me error.

Upvotes: 3

Answers (1)

Reputation: 48693

TypeError: float argument required, not str

Your error clearly states that you are trying to pass a String off as a Float.

You must cast your string value to a float:

for number in tokens: 
    print '{:6.2f}'.format(float(number))

Note If you are using a version of python earlier than 2.6 you cannot use format()
You will have to use the following:

print '%6.2f' % (float(number),) # This is ugly.

Here is some documentation on Python 2.7 format examples.

Upvotes: 3