- in – đánh giá là True nếu giá trị trong toán hạng bên trái xuất hiện trong chuỗi được tìm thấy trong toán hạng bên phải. Ví dụ: 'Xin chào' trong 'Xin chào thế giới' trả về True vì chuỗi con Xin chào có trong chuỗi Xin chào thế giới
- not in – đánh giá là True nếu giá trị trong toán hạng bên trái không xuất hiện trong chuỗi được tìm thấy trong toán hạng bên phải. Ví dụ: ‘house’ trong ‘Hello world’ trả về True vì chuỗi con house không có trong chuỗi Hello world
Python cung cấp hai toán tử thành viên để kiểm tra hoặc xác thực tư cách thành viên của một giá trị. Nó kiểm tra tư cách thành viên trong một chuỗi, chẳng hạn như chuỗi, danh sách hoặc bộ dữ liệu.
trong toán tử. Toán tử 'in' được sử dụng để kiểm tra xem một ký tự/chuỗi con/phần tử có tồn tại trong một chuỗi hay không. Đánh giá là Đúng nếu nó tìm thấy phần tử được chỉ định trong một chuỗi nếu không thì Sai. Ví dụ,
'G' in 'GeeksforGeeks' # Checking 'G' in String True 'g' in 'GeeksforGeeks' #Checking 'g' in string since Python is case-sensitive,returns False False 'Geeks' in ['Geeks', 'For','Geeks'] #Checking 'Geeks' in list of strings True 10 in [10000,1000,100,10] #Checking 10 in list of integers True dict1={1:'Geeks',2:'For',3:'Geeks'} # Checking 3 in keys of dictionary 3 in dict1 True
Python3
# Python program to illustrate
# Finding common member in list
# using 'in' operator
list1
1_______0not overlapping not overlapping not overlapping not overlapping not overlapping
1not overlapping not overlapping not overlapping not overlapping not overlapping
2not overlapping not overlapping not overlapping not overlapping not overlapping
3not overlapping not overlapping not overlapping not overlapping not overlapping
4not overlapping not overlapping not overlapping not overlapping not overlapping
3not overlapping not overlapping not overlapping not overlapping not overlapping
6not overlapping not overlapping not overlapping not overlapping not overlapping
3not overlapping not overlapping not overlapping not overlapping not overlapping
8not overlapping not overlapping not overlapping not overlapping not overlapping
3not overlapping
0not overlapping
1not overlapping
2_______1_______0not overlapping not overlapping not overlapping not overlapping not overlapping
1not overlapping
5_______1_______3not overlapping
7not overlapping not overlapping not overlapping not overlapping not overlapping
3not overlapping
9_______1_______3x is NOT present in given list y is present in given list
1not overlapping
1x is NOT present in given list y is present in given list
3x is NOT present in given list y is present in given list
4x is NOT present in given list y is present in given list
5x is NOT present in given list y is present in given list
6x is NOT present in given list y is present in given list
7_______22_______8x is NOT present in given list y is present in given list
4x is NOT present in given list y is present in given list
5True
1True
2_______32_______3True
4True
5True
6x is NOT present in given list y is present in given list
7_______32_______8True
9True
2_______32_______3True
4False True False
3True
6Đầu ra
not overlapping not overlapping not overlapping not overlapping not overlapping
Ví dụ tương tự mà không sử dụng toán tử in
Python3
# Python program to illustrate
# Finding common member in list
False True False
7False True False
8False True False
9# Python program to illustrate
0x is NOT present in given list y is present in given list
7_______199_______2not overlapping not overlapping not overlapping not overlapping not overlapping
0# Python program to illustrate
4x is NOT present in given list y is present in given list
7_______199_______6not overlapping not overlapping not overlapping not overlapping not overlapping
0# Python program to illustrate
4x is NOT present in given list y is present in given list
7_______22_______3# Finding common member in list
1x is NOT present in given list y is present in given list
5x is NOT present in given list y is present in given list
6True
2_______199_______2____200_______6not overlapping not overlapping not overlapping not overlapping not overlapping
0not overlapping not overlapping not overlapping not overlapping not overlapping
2x is NOT present in given list y is present in given list
7_______22_______3# Finding common member in list
1x is NOT present in given list y is present in given list
5True
1True
2_______199_______6# Finding common member in list
6not overlapping not overlapping not overlapping not overlapping not overlapping
0not overlapping not overlapping not overlapping not overlapping not overlapping
2x is NOT present in given list y is present in given list
7_______22_______3# Finding common member in list
1x is NOT present in given list y is present in given list
5list1
3True
4# Python program to illustrate
4list1
6True
2_______22_______3list1
9x is NOT present in given list y is present in given list
5list1
3True
4# Python program to illustrate
4not overlapping not overlapping not overlapping not overlapping not overlapping
04not overlapping not overlapping not overlapping not overlapping not overlapping
05x is NOT present in given list y is present in given list
8not overlapping not overlapping not overlapping not overlapping not overlapping
07not overlapping not overlapping not overlapping not overlapping not overlapping
0not overlapping not overlapping not overlapping not overlapping not overlapping
0not overlapping not overlapping not overlapping not overlapping not overlapping
10not overlapping not overlapping not overlapping not overlapping not overlapping
11not overlapping not overlapping not overlapping not overlapping not overlapping
12not overlapping not overlapping not overlapping not overlapping not overlapping
2x is NOT present in given list y is present in given list
7_______1_______12# Python program to illustrate
4list1
1_______0not overlapping not overlapping not overlapping not overlapping not overlapping
1not overlapping not overlapping not overlapping not overlapping not overlapping
2not overlapping not overlapping not overlapping not overlapping not overlapping
3not overlapping not overlapping not overlapping not overlapping not overlapping
4not overlapping not overlapping not overlapping not overlapping not overlapping
3not overlapping not overlapping not overlapping not overlapping not overlapping
6not overlapping not overlapping not overlapping not overlapping not overlapping
3not overlapping not overlapping not overlapping not overlapping not overlapping
8not overlapping not overlapping not overlapping not overlapping not overlapping
3not overlapping
0not overlapping
1not overlapping
2_______1_______0not overlapping not overlapping not overlapping not overlapping not overlapping
1not overlapping
5_______1_______3not overlapping
7not overlapping not overlapping not overlapping not overlapping not overlapping
3not overlapping
9_______1_______3x is NOT present in given list y is present in given list
1not overlapping
1x is NOT present in given list y is present in given list
8not overlapping not overlapping not overlapping not overlapping not overlapping
42x is NOT present in given list y is present in given list
7_______32_______3True
4True
5True
6True
8True
9x is NOT present in given list y is present in given list
7_______32_______3True
4False True False
3True
6Đầu ra
not overlapping
Toán tử 'không có trong'- Đánh giá là đúng nếu nó không tìm thấy một biến trong chuỗi đã chỉ định và sai nếu ngược lại
Python3
# Python program to illustrate
not overlapping not overlapping not overlapping not overlapping not overlapping
56not overlapping not overlapping not overlapping not overlapping not overlapping
57not overlapping not overlapping not overlapping not overlapping not overlapping
0not overlapping not overlapping not overlapping not overlapping not overlapping
59not overlapping not overlapping not overlapping not overlapping not overlapping
60not overlapping not overlapping not overlapping not overlapping not overlapping
0not overlapping not overlapping not overlapping not overlapping not overlapping
62not overlapping not overlapping not overlapping not overlapping not overlapping
63not overlapping not overlapping not overlapping not overlapping not overlapping
0not overlapping not overlapping not overlapping not overlapping not overlapping
1not overlapping not overlapping not overlapping not overlapping not overlapping
66not overlapping not overlapping not overlapping not overlapping not overlapping
3not overlapping not overlapping not overlapping not overlapping not overlapping
62not overlapping not overlapping not overlapping not overlapping not overlapping
3not overlapping not overlapping not overlapping not overlapping not overlapping
70not overlapping not overlapping not overlapping not overlapping not overlapping
3not overlapping not overlapping not overlapping not overlapping not overlapping
72not overlapping not overlapping not overlapping not overlapping not overlapping
3not overlapping not overlapping not overlapping not overlapping not overlapping
74not overlapping
1x is NOT present in given list y is present in given list
8not overlapping not overlapping not overlapping not overlapping not overlapping
77not overlapping not overlapping not overlapping not overlapping not overlapping
78x is NOT present in given list y is present in given list
5not overlapping not overlapping not overlapping not overlapping not overlapping
63not overlapping not overlapping not overlapping not overlapping not overlapping
81x is NOT present in given list y is present in given list
7_______32_______3True
4not overlapping not overlapping not overlapping not overlapping not overlapping
85True
6True
8True
9x is NOT present in given list y is present in given list
7_______32_______3True
4not overlapping not overlapping not overlapping not overlapping not overlapping
92True
6x is NOT present in given list y is present in given list
8not overlapping not overlapping not overlapping not overlapping not overlapping
95_______22_______5not overlapping not overlapping not overlapping not overlapping not overlapping
63_______1_______81x is NOT present in given list y is present in given list
7_______32_______3True
4not overlapping
02True
6True
8True
9x is NOT present in given list y is present in given list
7_______32_______3True
4not overlapping
09True
6Đầu ra
x is NOT present in given list y is present in given list
Toán tử nhận dạng
Các toán tử nhận dạng được sử dụng để so sánh các đối tượng nếu cả hai đối tượng thực sự thuộc cùng một kiểu dữ liệu và chia sẻ cùng một vị trí bộ nhớ
Có các toán tử nhận dạng khác nhau nhưToán tử 'is' – Đánh giá là True nếu các biến ở hai bên của toán tử trỏ đến cùng một đối tượng và sai nếu ngược lại
Python3
not overlapping
11not overlapping
12not overlapping not overlapping not overlapping not overlapping not overlapping
57not overlapping not overlapping not overlapping not overlapping not overlapping
0not overlapping
0not overlapping not overlapping not overlapping not overlapping not overlapping
60not overlapping not overlapping not overlapping not overlapping not overlapping
0not overlapping
0True
3not overlapping not overlapping not overlapping not overlapping not overlapping
77not overlapping
21not overlapping
22not overlapping
23not overlapping
24not overlapping
23not overlapping
26Đầu ra
True
Ở đây trong ví dụ đã cho, cả hai biến x và y đều được gán giá trị 5 và cả hai đều chia sẻ cùng một vị trí bộ nhớ, đó là lý do trả về True
Toán tử thành viên trong Python là gì?
Toán tử tư cách thành viên là toán tử được sử dụng để xác thực tư cách thành viên của một giá trị . Nó kiểm tra tư cách thành viên trong một chuỗi, chẳng hạn như chuỗi, danh sách hoặc bộ dữ liệu. trong toán tử. Toán tử 'in' được sử dụng để kiểm tra xem một giá trị có tồn tại trong một chuỗi hay không.Có bao nhiêu loại toán tử thành viên được sử dụng trong Python?
Trong Python, có hai toán tử thành viên. [trong, không trong].4 toán tử trong Python là gì?
Toán tử Python .toán tử số họcToán tử gánToán tử so sánhToán tử logicToán tử nhận dạngnhà khai thác thành viênToán tử bitwise