str = “pynative” print (str[1:3]) What is the output of the following cod O py Oyn O pyn O yna
str = “pynative” print (str[1:3]) What is the output of the following cod O py Oyn O pyn O yna
The Correct Answer and Explanation is:
Correct Answer: yn
Explanation:
In the given code:
pythonCopyEditstr = "pynative"
print(str[1:3])
We are using string slicing, which allows you to extract a part of the string using the syntax:string[start_index : end_index]
This extracts characters starting from the position start_index up to but not including end_index.
Step-by-step breakdown:
- The original string is: iniCopyEdit
str = "pynative"The characters in the string have the following index positions: makefileCopyEditIndex: 0 1 2 3 4 5 6 7 Character: p y n a t i v e - Now let’s examine the slicing: pythonCopyEdit
str[1:3]1is the starting index, which corresponds to the character ‘y’3is the ending index, but it is not included in the result- So this slice includes the characters at index 1 and 2 only
- Characters at these positions:
- Index 1:
'y' - Index 2:
'n'
- Index 1:
- Therefore,
str[1:3]gives us:'yn'
Why other choices are incorrect:
- py: would require
str[0:2] - pyn: would require
str[0:3] - yna: would require
str[1:4]
Only ‘yn’ is the correct output for str[1:3].
This concept is important when working with lists, strings, or any sequence in Python, as slicing is a powerful and efficient way to manipulate data. Understanding that the end index is excluded helps avoid common off-by-one errors in your programs.
