Mastering Python String Techniques

Which of the following methods would you use to convert a string to all uppercase letters in Python?

• `str.uppercase()`

• `str.toUpperCase()`

• `str.upper()`

• `str.capitalize()`

What will be the output of the following code snippet? ```python s = "Hello, World!" print(s[7:12]) ```

• `World`

• `World!`

• `ello,`

• `Hello`

Which of the following is a valid way to find the position of a substring within a string in Python?

• `str.find(substring)`

• `str.indexOf(substring)`

• `str.search(substring)`

• `str.locate(substring)`

What will be the result of the following code? ```python s = "Python" print(s[::-1]) ```

• `nohtyP`

• `Python`

• `nohty`

• `Pytho`

Which of the following methods can be used to remove whitespace from the beginning and end of a string?

• `str.strip()`

• `str.trim()`

• `str.clean()`

• `str.remove()`

What will be the output of the following code snippet? ```python s = "banana" print(s.count('a')) ```

• `1`

• `2`

• `3`

• `4`

Which of the following is a correct way to concatenate two strings, `s1` and `s2`, in Python?

• `s1 + s2`

• `s1.concat(s2)`

• `s1 & s2`

• `s1.append(s2)`

What will be the result of the following code? ```python s = "abcdef" print(s[1:5:2]) ```

• `bc`

• `bd`

• `ace`

• `be`

Which of the following methods checks if all characters in a string are alphanumeric?

• `str.isalnum()`

• `str.isalpha()`

• `str.isdigit()`

• `str.isnumeric()`

What will be the output of the following code snippet? ```python s = "Hello, World!" print(s.replace("World", "Python")) ```

• `Hello, Python!`

• `Hello, World!`

• `Hello, Python`

• `Hello, Python World!`