Casting float to string without scientific notation

问题

The float:

fl = 0.000005

casts to String as str(fl)=='5e-06'. however, I want it to cast as str(fl)='0.000005' for exporting to CSV purposes.

How do I achieve this?

回答1:

Use

fl = 0.00005
s = str('%8.5f' % fl)
print s, type(s)

Gives

0.00005 <type 'str'>

In case you want no extra digits, use %g

fl = 0.0005
s = str('%g' % fl)
print s, type(s)

fl = 0.005
s = str('%g' % fl)
print s, type(s)

Gives

0.0005 <type 'str'>
0.005 <type 'str'>

回答2:

You can just use the standard string formatting option stating the precision you want

>>> fl = 0.000005
>>> print '%.6f' % fl
0.000005

来源：https://stackoverflow.com/questions/25665523/casting-float-to-string-without-scientific-notation