Module 11 of 15 · Step 1 of 14

Strings

A string is text. You can read its characters, measure its length, clean it, replace parts, and build a message from values.

By the end of this lesson, you can:

Read characters and length
Use common text methods
Check membership and join strings
Build messages with f-strings

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Learn · Text is a sequence of characters

Concept 1 of 5

Text is a sequence of characters

Put text inside matching single or double quotes. Each character has an index starting at 0. The last character can be read with -1; len() counts the characters.

Pattern

word[0]
word[-1]
len(word)

Code

word = "Python"
print(word[0])
print(len(word))

Output

P
6

Why it works

word[0] reads the first character P.
len(word) counts six characters.
The quotes define text but are not counted as characters.

Common mistake

Not this

word[1]  # expecting P

Try this

word[0]

String positions begin at zero, just like list positions.