Regex to check character and integer inside a string

Question

I have a data frame and I want to flag all the elements inside this which contains character or character plus integer value.

After a little bit of search, I could make this regex but its not giving the expected output:

([A-Za-z]+[0-9]|[0-9]+[A-Za-z])[A-Za-z0-9]*

Expected output

alpha -  True
Alpha1 - True
A35. 1ha-True
Alp1Ha - True
A pha6-  True
12345 -  False
0 -      False
-23442 - False

@WiktorStribiżew it worked perfectly with the sample i have mentioned above but its giving wrong output when i ran it against my dataframe. for example, i am testing with a single vector of 420 entities and its giving me an output of 2200 entries. — rajan.sngh, Jul 03 '19 at 15:36
@WiktorStribiżew that the regex should work with any type of string which follow the structure as mentioned above. — rajan.sngh, Jul 03 '19 at 15:47
Try `^[^A-Za-z]*[A-Za-z].*$`, does it [work](https://regex101.com/r/FrBubN/1)? — Wiktor Stribiżew, Jul 04 '19 at 13:21
Great, then please consider [accepting the answer](https://stackoverflow.com/a/56965979/3832970). — Wiktor Stribiżew, Jul 10 '19 at 07:57

score 0 · Answer 1 · answered Jul 03 '19 at 16:37

0

Try this : demo

^(?=.*[a-zA-Z]).+$

answered Jul 03 '19 at 16:37

Ashraful Islam

score 0 · Answer 2 · answered Jul 10 '19 at 07:57

0

You may use

^[^A-Za-z]*[A-Za-z].*$

Details

answered Jul 10 '19 at 07:57

Wiktor Stribiżew

2 Answers2