you already know that python has bool type actuallythis is fairly recent addition to the language (version before thatpython just used the ints and to represent true and false in factthe bool type is just "specialint where the values of and print as false and true you can test this out by evaluating the expression true true we have been using the bool literals true and false to represent the boolean values true and falserespectively the python condition operators ( ==always evaluate to value of type bool howeverpython is actually very flexible about what data type can appear as boolean expression any built-in type can be interpreted as boolean for numbers (ints and floatsa zero value is considered as falseanything other than zero is taken as true you can see how value will be interpreted when used as boolean expression by explicitly converting the value to type bool here are few examplesbool( false bool( true bool( true bool("hello"true bool(""false bool([ , , ]true bool([]false as you can seefor sequence typesan empty sequence is interpreted as false whereas any nonempty sequence is taken to indicate true the flexibility of python booleans extends to the boolean operators although the main use of these operators is forming boolean expressionsthey have operational definitions that make them useful for other purposes as well this table summarizes the behavior of these operatorsoperator and or not operational definition if is falsereturn otherwisereturn if is truereturn otherwisereturn if is falsereturn true otherwisereturn false the definition of not is straightforward it might take bit of thinking to convince yourself that these descriptions of and and or faithfully reflect the truth tables you saw at the beginning of the consider the expression and in order for this to be trueboth expressions and must be true as soon as one of them is discovered to be falsethe party is over python looks at the expressions left-to-right if is falsepython should return false result whatever the false value