Linguistica computazionale

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In [1]: import re
 
In [2]: re.sub('a','o','casa')
Out[2]: 'coso'
 
In [3]: 'casa'.replace('a','o')
Out[3]: 'coso'
 
In [4]: 'Giulio Cesare'.lower()
Out[4]: 'giulio cesare'
 
In [5]: a='casa'.replace('a','o')
 
In [6]: a
Out[6]: 'coso'
 
In [7]: print(a)
coso

In [1]: sub('a','o','casa')
 
---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[1], line 1
----> 1 sub('a','o','casa')
 
NameError: name 'sub' is not defined
 
In [2]: from re import sub
 
In [3]: sub('a','o','casa')
Out[3]: 'coso'