4.7 type() function query data type

4.7 type( ) Function to query the data type

type( ) effect ： Query data type .
grammar ：type(' The content of the query ')

frequently-used 3 Type of data ：
1、Python The first data type ： character string （str）.
2、Python The second data type ： Integers （int）.
3、Python The third data type ： Floating point numbers （float）.

#  Set a string variable 
name = ' Andy '

#  Query the data type of the variable .
type(name)

【 Terminal output 】
str

Output after running code str Explanatory variable name The data type of is string .

#  Set an integer variable 
phone_number  = 18087558755

#  Query the data type of the variable .
type(phone_number)

【 Terminal output 】
int

Output after running code int Explanatory variable phone_number The data type of is integer .

#  Set a floating point variable 
number = 88.88

#  use print Function to query the data type of a variable .
print(type(number))

【 Terminal output 】
<class ‘float’>

Output after running code float Explanatory variable number The data type of is a floating point number .
stay .ipynb In file , Output content can be used print( ) function , You can also call variable output directly ( for example ：type(phone_number)).
stay .py In file , Output content can only be used print( ) function .
class In this case, it refers to the data type .

#  Define three variables 
name = ' Zhang San '
number_1 = 8888
number_2 = 0.66

# print( ) Function view data type 
print(type(name))
print(type(number_1))
print(type(number_2))

【 Terminal output 】
<class ‘str’>
<class ‘int’>
<class ‘float’>