str1= substring of a string which has to be replaced str2= substring of a string with which str1 has to be replaced count= number of times we need to replace , by default this value will be 1 Example: ...

Extracting a substring in Python using slicing can be achieved with negative indexing. 1️⃣ Negative indices count from the end of the string. For example, s [-1] gives the last character ...

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Positive indexing in Python starts at zero and increases to the right. To slice with positive indexes, determine the position where your substring starts and ends within the original string.