String Function and Operators

String Length function

• return the length of string (total number of characters)

len(string)

Comparison operator

str1 == str2 equality str1 !== str2 non equality str1 > str2 greater than str1 < str2 less than str1 >= str2 greater than or str1 <>= str2 less than or equal

• compared character by character
• start at index 0
• Two strings are equal when they have
  • the same order of characters
  • the same number characters

Ord Function

• return integer Unicode of character
• internally, comparison operators use the ord function

ord(character)

Comparison operator Example

print("apple" < "banana")
print(ord("a"), ord("b"))
print("apple" < "Blueberry")
print(ord("a"), ord("B"))
# Output
True
97 98
False
97 66

Concatenation operator

str1 + str2

String Append Examples

a = "UC"
b = "Berkeley"
c = a + " " +b
print(c)
# Output
UC Berkeley

Membership operator

• check if substr is contained in string
• returns a boolean string

substr in string

s = "UC Berkeley"
print("Berkeley" in s)

# Output
True

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