Python · Lesson 1.3

Strings

Text in Python: quotes, joining, length, and picking out single characters.

1Text goes in quotes

A string is text inside quotes. Single and double quotes both work; pick the one that isn't inside your text.

name = "Priya"
note = "It's raining"
print(name, note)

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Practice

Store the text Don't forget the receipt in a variable called reminder and print it.

# Create reminder and print it

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+ glues strings together and * repeats one. Neither adds spaces for you.

first = "data"
second = "science"
print(first + " " + second)
print("-" * 20)

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Practice

Build the email address ana.silva@shop.example from the two variables below with +, and print it.

first = "ana"
last = "silva"
# Build and print the email address

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len() counts the characters. Square brackets pick one character by position, and counting starts at 0; -1 is the last one.

code = "SKU-4821"
print(len(code))
print(code[0], code[4], code[-1])

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Common mistake

The first character is [0], not [1]. And code[len(code)] is one past the end, so it raises an IndexError.

Practice

Print the first letter of product, then on the next line its last letter, then on a third line its length.

product = "notebook"
# Print first letter, last letter, length

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A backslash starts a special character: \n is a new line and \t is a tab. A string in triple quotes can span several lines.

print("Name\tScore")
print("Ana\t91\nBen\t78")

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Practice

Print this two-line receipt using one print() and \n:

Item: tea
Price: 3

# One print() with \n

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