How to add + sign to every element in np.array

Question

How to add + sign to ids which were generated by np.arange(len(web))

You need to convert them to strings if you want to concatenate a string to them. — Barmar, Nov 18 '21 at 18:09
See https://stackoverflow.com/questions/9958846/converting-int-arrays-to-string-arrays-in-numpy-without-truncation for how to convert it to a string array. — Barmar, Nov 18 '21 at 18:10

score 1 · Answer 1 · edited Nov 18 '21 at 18:39

1

Convert your array to strings. Then use map() to convert them to strings and add +, and convert this to an array.

r = np.arange(len(web))
rplus = np.array(map(lambda x: '+' + str(x), r)

edited Nov 18 '21 at 18:39

mathfux

answered Nov 18 '21 at 18:19

Barmar

1 Answers1