encoding character or string to integer in python
note:text contains your string or already read textfile
import numpy as np
text = 'hello'
vocab=sorted(set(text))
char_to_ind = {char:ind for ind,char in enumerate(vocab)}
encoded_text = np.array([char_to_ind[c]for c in text])
your string has been encodedconvert string to number python
>>> x = "23"
>>> y = "20"
>>> z = int(x) - int(y)
>>> z
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