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Tuples in Python are immutable, they cannot be changed. Once an element is inside a tuple (1, 2, 3), it cannot be changed.



In [1]:

    
t = (1,2,3)
l = [1,2,3]



In [2]:

    
t









    Out[2]:





(1, 2, 3)



In [3]:

    
l









    Out[3]:





[1, 2, 3]



In [4]:

    
len(t)









    Out[4]:





3



In [7]:

    
#can use slicing and indexing
t[2] # indexing
t[-1] # indexing









    Out[7]:





3



In [8]:

    
t[0:] # slicing









    Out[8]:





(1, 2, 3)



In [9]:

    
l[2]









    Out[9]:





3



In [10]:

    
l[1:]









    Out[10]:





[2, 3]



In [11]:

    
l[0] = 'NEW'



In [13]:

    
l









    Out[13]:





['NEW', 2, 3]



In [15]:

    
t[0] = 'NEW' #Point and case: cannot change data in a tuple.









    



---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-15-995dc306a50f> in <module>()
----> 1 t[0] = 'NEW' #Point and case: cannot change data in a tuple.

TypeError: 'tuple' object does not support item assignment



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