If you want to change the display in a Jupyter Notebook, you can use the Style feature.
To use this formatting for only some columns simply indicate the column(s) to enlarge thanks to the subset parameter. This is basically HTML and CSS.
### Test data
df = DataFrame({'text': ['foo foo foo foo foo foo foo foo', 'bar bar bar bar bar'],
'number': [1, 2]})
df.style.set_properties(subset=['text'], **{'width': '300px'})
