File I/O and String Operations Flashcards

Which string method converts all characters to uppercase?

Answer: upper()

`str.upper()` returns a new string with all characters converted to uppercase.

What does `str.strip()` do?

Answer: Removes leading and trailing whitespace

`strip()` removes whitespace (or specified characters) from both ends of the string.

How do you split a string `s` by commas?

Answer: s.split(',')

`str.split(delimiter)` splits the string at each occurrence of the delimiter and returns a list.

Which method joins a list of strings with a separator?

Answer: sep.join(list)

`separator.join(iterable)` concatenates iterable elements using the separator string.

What does the f-string `f'Hello {name}'` do?

Answer: Inserts the value of `name` into the string

f-strings (formatted string literals) evaluate expressions in `{}` and embed them in the string.

Which method checks if a string starts with a given prefix?

Answer: startswith()

`str.startswith(prefix)` returns True if the string starts with the specified prefix.