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Just curious more than anything why python will allow me to update a slice of a list but not a string?
>>> s = "abc"
>>> s[1:2]
'b'
>>> s[1:3]
'bc'
>>> s[1:3] = "aa"
>>> l = [1,2,3]
>>> l[1:3]
[2, 3]
>>> l[1:3] = [9,0]
>>> l
[1, 9, 0]
Is there a good reason for this? (I am sure there is.)
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Python string supports slicing to create substring. Note that Python string is immutable, slicing creates a new substring from the source string and original string remains unchanged.
When you slice strings, they return a new instance of String. Strings are immutable objects.
Slicing StringsSpecify the start index and the end index, separated by a colon, to return a part of the string.
Consider a python list, In-order to access a range of elements in a list, you need to slice a list. One way to do this is to use the simple slicing operator i.e. colon(:) With this operator, one can specify where to start the slicing, where to end, and specify the step.
Because in python, strings are immutable.
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