supress scientific notation when writing python floats to files

问题

Writing floats to a CSV writes some of them like this: 2.0628800997782577e-05

c = csv.writer(open(file, "wb"))
c.writerow([var1, var2])    

What I've tried:

• I have already tried var1**8 following other answers on StackOverflow, but this simply raises them to the power of 8.
• I have also tried Decimal(var1), but this does not suppress the scientific notation.

This makes it difficult to process the output in excel afterwards as it's recognized as text and not a number. How can I print it in non-scientific, decimal notation?

回答1:

'%f' % your_var

Or to control the precision:

'%0.10f' % your_var

回答2:

Use string formatting:

c.writerow(['{:f}'.format(var) for var in (var1, var2)]

来源：https://stackoverflow.com/questions/11605235/supress-scientific-notation-when-writing-python-floats-to-files