$"$in$"$ keyword

boolean: short$\_$str in long$\_$str

$]$: # $[]$ get user input for the name of some animals in the variable animals$\_$input

# $[]$ print true or false if 'cat' is in the string variable animals$\_$input

$]$: # $[]$ get user input for color

# $[]$ print True or False for starts with $"$b$"$

# $[]$ print color variable value exactly as input

# test with input: "Blue", "BLUE", "bLUE"