How to split a string with an integer into two variables?

Question

For example, is it possible to convert the input

x = 10hr

into something like

y = 10
z = hr

I considering slicing, but the individual parts of the string will never be of a fixed length -- for example, the base string could also be something like 365d or 9minutes.

I'm aware of split() and re.match which can separate items into a list/group based on delimitation. But I'm curious what the shortest way to split a string containing a string and an integer into two separate variables is, without having to reassign the elements of the list.

"But I'm curious what the shortest way to split a string containing a string and an integer into two separate variables is, without having to reassign the elements of the list." - do you have any reason to expect something shorter than y, z = whatever_you_have_in_mind_that_gives_a_list(x)? (Did you just not know you can do y, z = some_2_element_list?) — user2357112
– user2357112, Commented Mar 17, 2021 at 15:42
"I considering slicing, but the individual parts of the string will never be of a fixed length" This indicates that you need to calculate the length of the "number" part of your string. — Code-Apprentice
– Code-Apprentice, Commented Mar 17, 2021 at 15:49
Also, split() uses a delimiter, but re.match() doesn't have to. Rather, you tell it what part of the string to match with a regular expression and it returns that part. — Code-Apprentice
– Code-Apprentice, Commented Mar 17, 2021 at 15:49

Jay · Accepted Answer · 2021-03-17 15:47:08Z

3

You could use list comprehension and join it as a string

x='10hr'
digits="".join([i for i in x if not i.isalpha()])
letters="".join([i for i in x if i.isalpha()])

answered Mar 17, 2021 at 15:47

Jay

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ThePyGuy · Accepted Answer · 2021-03-17 15:46:07Z

1

You don't need some fancy function or regex for your use case

 x = '10hr'
 i=0
 while x[i].isdigit():
     i+=1

The solution assumes that the string is going to be in format you have mentioned: 10hr, 365d, 9minutes, etc.. Above loop will get you the first index value i for the string part

>>i
2
>>x[:i]
'10'
>>x[i:]
'hr'

edited Mar 17, 2021 at 15:46

answered Mar 17, 2021 at 15:42

ThePyGuy

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1 Comment

ThePyGuy Over a year ago

@martineau Thanks for letting me know about the indentation.. I did not notice it when I posted it

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