In Python, a string is a sequence of characters enclosed inside quotation marks. You can use either single quotes ('), double quotes ("), or triple quotes (''' or """) to represent a string. For instance:

text = 'Hi there'
print(text)  # Output: Hi there

Here, 'Hi there' is a string containing the characters 'H', 'i', space (' '), 't', 'h', 'e', 'r', and 'e'. Strings are versatile and widely used in Python for various purposes. 

quote = "To be or not to be, that is the question."
print(quote)  # Output: To be or not to be, that is the question.

In this example, the string "To be or not to be, that is the question." is assigned to the variable quote. Strings can contain letters, digits, spaces, punctuation, and special characters.