python-docx- change lowercase to bold, italic

[Tmagpy]

In my docx file there are pieces of text i have to process such as making words italic, bold or underlined.

Example

input: In the future, if you try hard you will fail a lot

I used this code:

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from docx import Document import re   def change(filename,key):     doc = Document(filename)     for p in doc.paragraphs:         text = p.text         split_text = text.split(key)         for i in split_text[:-1]:             p.add_run(i)             font = p.add_run(key).bold = True         p.add_run(split_text[-1])     doc.save('test.docx') path = r'path of file' change(path,'key')

but the result is

In the future, if you try hard you will fail a lotIn the future

What do I have to do so that the output is

output: In the future, if you try hard you will fail a lot