How to transform a tuple to a string of values without comma and parentheses

Question

I retrieved data from a sql query by using

bounds = cursor.fetchone()

And I get a tuple like:

(34.2424, -64.2344, 76.3534,         


        

Answer 1

You can also use str.format() to produce any arbitrary formatting if you're willing to use * magic. To handle the specific case of this question, with a single separator, is actually a little cumbersome:

>>> bounds = (34.2424, -64.2344, 76.3534, 45.2344)
>>> "{} {} {} {}".format(*bounds)

34.2424 -64.2344 76.3534 45.2344

A more robust version that handles any length, like join, is:

>>> len(bounds)*"{} ".format(*bounds)

But the value added is that if you want to extend your formatting to something more involved you've got the option:

>>> "{} --> | {:>10} | {:>10} | {:>10} |".format(*bounds)

34.2424 --> |   -64.2344 |    76.3534 |    45.2344 |

From here, your string formatting options are very diverse.