Question

Is it possible to change a string to float with numbers formatted without E?

I get an error trying float("0.333-5"). Float numbers in Python are with an e or E.
Any idea? How can add the E easily?

Answer 1

Use the following regular expression:

import re
re.sub('(.)([-+]\d)', r'\1e\2', number_string)

where number_string = 0.333-5. This will work for negative numbers and also for a format like .5-5.