Python có loại phạm vi nào?
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Phạm vi biến của Python Show Cải thiện bài viết Lưu bài viết Thích bài viết
Cải thiện bài viết Lưu bài viết Trong Python, biến là nơi chứa các giá trị dữ liệu. Chúng là tham chiếu hoặc con trỏ tới một đối tượng trong bộ nhớ, điều đó có nghĩa là bất cứ khi nào một biến được gán cho một thể hiện, nó sẽ được ánh xạ tới thể hiện đó. Không giống như các ngôn ngữ khác như C/C++/JAVA, Python không được “gõ tĩnh”. Chúng ta không cần khai báo biến trước khi sử dụng hoặc khai báo kiểu của chúng. Một biến được tạo ngay khi chúng ta gán giá trị cho nó lần đầu tiên Python3
I love Geeksforgeeks0 I love Geeksforgeeks1 I love Geeksforgeeks2 I love Geeksforgeeks3
I love Geeksforgeeks5 I love Geeksforgeeks6_______0_______2 I love Geeksforgeeks8
Me too. I love Geeksforgeeks0 Me too. I love Geeksforgeeks1 I love Geeksforgeeks2 Me too. I love Geeksforgeeks3
Me too. I love Geeksforgeeks5 Me too. I love Geeksforgeeks6 Me too. I love Geeksforgeeks5 Me too. I love Geeksforgeeks8 Me too. I love Geeksforgeeks5 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment0đầu ra. 45 1456.8 John Ghi chú. Để biết thêm về các biến bấm vào đây Phạm vi của biếnVị trí mà chúng ta có thể tìm thấy một biến và cũng có thể truy cập nó nếu cần được gọi là phạm vi của một biến Biến toàn cầu và cục bộBiến toàn cục là những biến được định nghĩa và khai báo bên ngoài bất kỳ hàm nào và không được chỉ định cho bất kỳ hàm nào. Chúng có thể được sử dụng bởi bất kỳ phần nào của chương trình Python3Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment1Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment2 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment3Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment4Me too. I love Geeksforgeeks5 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment6
Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment8Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment9_______0_______2 Python is great! Look for Geeksforgeeks Python Section Look for Geeksforgeeks Python Section1 Python is great! Look for Geeksforgeeks Python Section Look for Geeksforgeeks Python Section2 đầu ra. I love Geeksforgeeks Bây giờ, giả sử một biến có cùng tên được xác định bên trong phạm vi của hàm thì nó sẽ chỉ in giá trị được cung cấp bên trong hàm chứ không phải giá trị toàn cầu Python3Python is great! Look for Geeksforgeeks Python Section Look for Geeksforgeeks Python Section3 Python is great! Look for Geeksforgeeks Python Section Look for Geeksforgeeks Python Section4 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment2 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment3Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment4Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment9I love Geeksforgeeks2 global : 1 Inside f() : 1 global : 1 Inside g() : 2 global : 1 Inside h() : 3 global : 30 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment4Me too. I love Geeksforgeeks5 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment6
Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment8Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment9_______0_______2 Python is great! Look for Geeksforgeeks Python Section Look for Geeksforgeeks Python Section1 Python is great! Look for Geeksforgeeks Python Section Look for Geeksforgeeks Python Section2 Me too. I love Geeksforgeeks5 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment6đầu ra. Biến s được định nghĩa là chuỗi “I love Geeksforgeeks”, trước khi chúng ta gọi hàm f(). Câu lệnh duy nhất trong hàm f() là câu lệnh print(s). Vì không có local s nên giá trị từ global s sẽ được sử dụng Python3Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment2 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment3Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment4Me too. I love Geeksforgeeks5 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment6
Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment4____56_______9Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment4# Python program to demonstrate1Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment4Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment9I love Geeksforgeeks2 global : 1 Inside f() : 1 global : 1 Inside g() : 2 global : 1 Inside h() : 3 global : 30
Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment4Me too. I love Geeksforgeeks5 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment6
Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment8Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment9_______0_______2 Python is great! Look for Geeksforgeeks Python Section Look for Geeksforgeeks Python Section1 Python is great! Look for Geeksforgeeks Python Section Look for Geeksforgeeks Python Section2 Me too. I love Geeksforgeeks5 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment6đầu ra. Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignmentĐể làm cho chương trình trên hoạt động, chúng ta cần sử dụng từ khóa toàn cầu. Chúng ta chỉ cần sử dụng từ khóa toàn cầu trong một chức năng nếu chúng ta muốn thực hiện các bài tập/thay đổi chúng. toàn cầu không cần thiết để in và truy cập. Tại sao? . Bất kỳ biến nào được thay đổi hoặc tạo bên trong hàm đều là biến cục bộ, nếu nó chưa được khai báo là biến toàn cục. Để nói với Python rằng chúng ta muốn sử dụng biến toàn cục, chúng ta phải sử dụng từ khóa global, như có thể thấy trong ví dụ sau Python3
Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment2 0Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment4 2 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment9Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment4Me too. I love Geeksforgeeks5 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment6Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment4Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment9I love Geeksforgeeks2 I love Geeksforgeeks00 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment4Me too. I love Geeksforgeeks5 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment6
I love Geeksforgeeks05 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment9_______0_______2 I love Geeksforgeeks08 Python is great! Look for Geeksforgeeks Python Section Look for Geeksforgeeks Python Section2 Me too. I love Geeksforgeeks5 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment6đầu ra. Python is great! Look for Geeksforgeeks Python Section Look for Geeksforgeeks Python Section Xem xét ví dụ dưới đây để hiểu rõ hơn về chủ đề này. Python3
I love Geeksforgeeks13
I love Geeksforgeeks14 I love Geeksforgeeks2 I love Geeksforgeeks16
I love Geeksforgeeks18 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment2 0Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment4Me too. I love Geeksforgeeks5 I love Geeksforgeeks23 I love Geeksforgeeks24 I love Geeksforgeeks25
I love Geeksforgeeks27 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment2 I love Geeksforgeeks29 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment4I love Geeksforgeeks14 I love Geeksforgeeks2 I love Geeksforgeeks33 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment4Me too. I love Geeksforgeeks5 I love Geeksforgeeks23 I love Geeksforgeeks37 I love Geeksforgeeks25
I love Geeksforgeeks40 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment2 I love Geeksforgeeks42 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment4 2 I love Geeksforgeeks14 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment4I love Geeksforgeeks14 I love Geeksforgeeks2 I love Geeksforgeeks49 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment4Me too. I love Geeksforgeeks5 I love Geeksforgeeks23 I love Geeksforgeeks53 I love Geeksforgeeks25
Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment8Me too. I love Geeksforgeeks5 I love Geeksforgeeks23_______0_______59 I love Geeksforgeeks25 Python is great! Look for Geeksforgeeks Python Section Look for Geeksforgeeks Python Section2 Me too. I love Geeksforgeeks5 I love Geeksforgeeks23_______0_______59 I love Geeksforgeeks25 I love Geeksforgeeks66 Me too. I love Geeksforgeeks5 I love Geeksforgeeks23_______0_______59 I love Geeksforgeeks25 I love Geeksforgeeks71 Me too. I love Geeksforgeeks5 I love Geeksforgeeks23_______0_______59 I love Geeksforgeeks25 đầu ra. global : 1 Inside f() : 1 global : 1 Inside g() : 2 global : 1 Inside h() : 3 global : 3
từ khóa không cục bộTrong Python, từ khóa nonlocal được sử dụng trong trường hợp các hàm lồng nhau. Từ khóa này hoạt động tương tự như từ khóa toàn cầu, nhưng thay vì toàn cục, từ khóa này khai báo một biến để trỏ đến biến của hàm bao bên ngoài, trong trường hợp các hàm lồng nhau Python3
I love Geeksforgeeks77
Me too. I love Geeksforgeeks5 I love Geeksforgeeks23_______0_______80_______0_______81_______0_______2 I love Geeksforgeeks83 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment2 I love Geeksforgeeks85 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment4I love Geeksforgeeks14 I love Geeksforgeeks2 I love Geeksforgeeks89 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment4Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment2 I love Geeksforgeeks92 I love Geeksforgeeks93______0_______94 I love Geeksforgeeks93_______0_______14 I love Geeksforgeeks2 I love Geeksforgeeks98 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment4Me too. I love Geeksforgeeks00 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment4____8_______5 Me too. I love Geeksforgeeks03
Me too. I love Geeksforgeeks05
Me too. I love Geeksforgeeks07 Me too. I love Geeksforgeeks08 Me too. I love Geeksforgeeks09 Me too. I love Geeksforgeeks5 I love Geeksforgeeks23_______8_______12_______0_______81_______0_______2 I love Geeksforgeeks83 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment2 I love Geeksforgeeks85 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment4I love Geeksforgeeks14 I love Geeksforgeeks2 I love Geeksforgeeks89 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment4Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment2 I love Geeksforgeeks92 I love Geeksforgeeks93_______0_______14 I love Geeksforgeeks2 I love Geeksforgeeks98 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment4Me too. I love Geeksforgeeks00 Traceback (most recent call last):
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 13, in
f()
File "/home/370cac45bae7f1e6096520b7a0edb604.py", line 3, in f
print(s)
UnboundLocalError: local variable 's' referenced before assignment4____8_______5 Me too. I love Geeksforgeeks03
Me too. I love Geeksforgeeks05 đầu ra. Value of a using nonlocal is : 10 Value of a without using nonlocal is : 5
Ghi chú cá nhân của tôi arrow_drop_up Tiết kiệm Vui lòng Đăng nhập để nhận xét.Phạm vi của Python là gì?Trong Python, khái niệm phạm vi liên quan chặt chẽ với khái niệm không gian tên. Như bạn đã học, phạm vi Python xác định vị trí hiển thị tên trong chương trình của bạn . Phạm vi Python được triển khai dưới dạng từ điển ánh xạ tên cho các đối tượng. Những từ điển này thường được gọi là không gian tên.
Ba phạm vi trong Python là gì?Trong Python, có 4 loại phạm vi như sau. . Phạm vi toàn cầu Phạm vi cục bộ Phạm vi kèm theo Phạm vi tích hợp Phạm vi trong Python nói một cách đơn giản là gì?Một biến chỉ khả dụng từ bên trong khu vực mà nó được tạo . Đây được gọi là phạm vi.
Python có phạm vi thay đổi không?Phạm vi của một biến trong python là một phần của mã hiển thị. Thực ra để chỉ nó thì bạn không cần dùng thêm tiền tố nào cả. Hãy lấy một ví dụ, nhưng trước khi sửa lại cú pháp python. Ngoài ra, khoảng thời gian mà một biến còn sống được gọi là "thời gian sống" của nó |
