python-Job-3

1. And or not preferably in parentheses, first calculate parentheses

Execution order:

Front to back

Results

True OR ==>true

True and ==> continue walking

False OR ==> continue.

False OR ==>false

2. Several major symbols are categorized

The result is a value: arithmetic operation (a = 10*10), assignment operation (A = a+1/a + = 1)

The result is a Boolean value: The comparison operation (a = 1<5), the logical operation (A = 1< 6 or 1==1), the member operation (a = "B" in "Biology")

3. Basic data types

numeric int, all functions are in int

String str, all functions are placed in STR

List of lists, all functions are placed in list

Ganso tuple, all functions are placed in a tuple

The dictionary dict, all the functions are put in the dict.

boolean bool, all functions are placed in bool

python-Job-3