Hướng dẫn how to call a function from a variable in python - cách gọi một hàm từ một biến trong python

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Trong bài viết này, chúng ta sẽ xem làm thế nào để gán một hàm cho một biến trong Python. Trong Python, chúng ta có thể gán một hàm cho một biến. Và sử dụng biến đó, chúng tôi có thể gọi hàm nhiều như thời gian chúng tôi muốn. Do đó, tăng khả năng tái sử dụng mã. & Nbsp;

Thực hiện

Chỉ cần gán một hàm cho biến mong muốn nhưng không có () tức là chỉ với tên của hàm. Nếu biến được gán với hàm cùng với dấu ngoặc (), sẽ không được trả về.

Syntax::

Example:

Python3

test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 1 test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 2

test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 3test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 4test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 5test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 6test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 7

test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 8test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 9def test(): print 'test' def test2(): print 'test2' mydict = {'test':'blabla','test2':'blabla2'} for key, val in mydict.items(): eval(key+'()') 0

def test(): print 'test' def test2(): print 'test2' mydict = {'test':'blabla','test2':'blabla2'} for key, val in mydict.items(): eval(key+'()') 1

Output:  

Các chương trình sau đây sẽ giúp bạn hiểu rõ hơn:

Ví dụ 1: & nbsp;

Python3

def test(): print 'test' def test2(): print 'test2' mydict = {'test':'blabla','test2':'blabla2'} for key, val in mydict.items(): eval(key+'()') 2test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 9 def test(): print 'test' def test2(): print 'test2' mydict = {'test':'blabla','test2':'blabla2'} for key, val in mydict.items(): eval(key+'()') 4

test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 1 def test(): print 'test' def test2(): print 'test2' mydict = {'test':'blabla','test2':'blabla2'} for key, val in mydict.items(): eval(key+'()') 6def test(): print 'test' def test2(): print 'test2' mydict = {'test':'blabla','test2':'blabla2'} for key, val in mydict.items(): eval(key+'()') 7

def test(): print 'test' def test2(): print 'test2' mydict = {'test':'blabla','test2':'blabla2'} for key, val in mydict.items(): eval(key+'()') 8def test(): print 'test' def test2(): print 'test2' mydict = {'test':'blabla','test2':'blabla2'} for key, val in mydict.items(): eval(key+'()') 22test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 9 def test(): print 'test' def test2(): print 'test2' assign_list=[test,test2] for i in assign_list: i() 1

def test(): print 'test' def test2(): print 'test2' mydict = {'test':'blabla','test2':'blabla2'} for key, val in mydict.items(): eval(key+'()') 8test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 4def test(): print 'test' def test2(): print 'test2' assign_list=[test,test2] for i in assign_list: i() 4

def test(): print 'test' def test2(): print 'test2' mydict = {'test':'blabla','test2':'blabla2'} for key, val in mydict.items(): eval(key+'()') 8test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 4test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 5def test(): print 'test' def test2(): print 'test2' assign_list=[test,test2] for i in assign_list: i() 8def test(): print 'test' def test2(): print 'test2' assign_list=[test,test2] for i in assign_list: i() 9def func(): { .. } var=func var() var()0def func(): { .. } var=func var() var()1

test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 4def test(): print 'test' def test2(): print 'test2' assign_list=[test,test2] for i in assign_list: i() 4

def func(): { .. } var=func var() var()4test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 9 def test(): print 'test' def test2(): print 'test2' mydict = {'test':'blabla','test2':'blabla2'} for key, val in mydict.items(): eval(key+'()') 6

def func(): { .. } var=func var() var()7

def func(): { .. } var=func var() var()7

Output:

Ví dụ 2: Hàm được tham số hóaparameterized function

Python3

test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 1 GFG0

def test(): print 'test' def test2(): print 'test2' mydict = {'test':'blabla','test2':'blabla2'} for key, val in mydict.items(): eval(key+'()') 8GFG2 GFG3GFG4 GFG5 test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 9test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 9

123 98 123 98 1230test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 4test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 5123 98 123 98 1233test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 7

def test(): print 'test' def test2(): print 'test2' mydict = {'test':'blabla','test2':'blabla2'} for key, val in mydict.items(): eval(key+'()') 8123 98 123 98 1236GFG9

123 98 123 98 1230test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 4test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 5odd number even number odd number1test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 7

def func(): { .. } var=func var() var()4test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 9 odd number even number odd number5

odd number even number odd number6odd number even number odd number7test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 7

odd number even number odd number6240 400 40000test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 7

odd number even number odd number6240 400 40003test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 7

Output:

Ví dụ 3:

Python3

test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 1 240 400 40006

def test(): print 'test' def test2(): print 'test2' mydict = {'test':'blabla','test2':'blabla2'} for key, val in mydict.items(): eval(key+'()') 8240 400 40008test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 9 eval()0

def test(): print 'test' def test2(): print 'test2' mydict = {'test':'blabla','test2':'blabla2'} for key, val in mydict.items(): eval(key+'()') 8eval()2test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 9 def test(): print 'test' def test2(): print 'test2' mydict = {'test':'blabla','test2':'blabla2'} for key, val in mydict.items(): eval(key+'()') 0eval()5eval()6

def test(): print 'test' def test2(): print 'test2' mydict = {'test':'blabla','test2':'blabla2'} for key, val in mydict.items(): eval(key+'()') 8eval()8 eval()9

def func(): { .. } var=func var() var()4test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 9 test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 02

test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 4test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 04test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 05test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 06

test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 4test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 04240 400 40000test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 06

test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 4test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 04test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 13test = {test:'blabla', test2:'blabla2'} for key, val in test.items(): key() 06

Output: