Các toán tử thành viên được sử dụng trong Python là gì?

Toán tử thành viên trong Python được dùng để kiểm tra xem một giá trị có được tìm thấy trong một chuỗi hay không. Ví dụ: bạn có thể sử dụng toán tử thành viên để kiểm tra sự hiện diện của một chuỗi con trong một chuỗi. Có hai toán tử thành viên trong Python

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.

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Toán tử nhận dạng
Toán tử thành viên trong Python là gì?
Có bao nhiêu loại toán tử thành viên được sử dụng trong Python?
4 toán tử trong Python là gì?

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

list11_______0

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2_______1_______0

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5_______1_______3

not overlapping

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9_______1_______3

x is NOT present in given list
y is present in given list

not overlapping

x is NOT present in given list
y is present in given list

x is NOT present in given list
y is present in given list

x is NOT present in given list
y is present in given list

x is NOT present in given list
y is present in given list

x is NOT present in given list
y is present in given list

7_______22_______8

x is NOT present in given list
y is present in given list

x is NOT present in given list
y is present in given list

True

True

2_______32_______3

True

True

True

x is NOT present in given list
y is present in given list

7_______32_______8

True

True

2_______32_______3

True

False
True
False

True

Đầu ra

not overlapping
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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

False
True
False

False
True
False

9 # Python program to illustrate0

x is NOT present in given list
y is present in given list

7_______199_______2

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0 # Python program to illustrate4

x is NOT present in given list
y is present in given list

7_______199_______6

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0 # Python program to illustrate4

x is NOT present in given list
y is present in given list

7_______22_______3 # Finding common member in list1

x is NOT present in given list
y is present in given list

x is NOT present in given list
y is present in given list

True

2_______199_______2____200_______6

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x is NOT present in given list
y is present in given list

7_______22_______3 # Finding common member in list1

x is NOT present in given list
y is present in given list

True

True

2_______199_______6# Finding common member in list6

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x is NOT present in given list
y is present in given list

7_______22_______3 # Finding common member in list1

x is NOT present in given list
y is present in given list

5 list13

True

4# Python program to illustrate4list16

True

2_______22_______3 list19

x is NOT present in given list
y is present in given list

5 list13

True

4# Python program to illustrate4

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x is NOT present in given list
y is present in given list

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x is NOT present in given list
y is present in given list

7_______1_______12 # Python program to illustrate4

list11_______0

not overlapping
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2_______1_______0

not overlapping
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not overlapping

5_______1_______3

not overlapping

not overlapping
not overlapping
not overlapping
not overlapping
not overlapping

not overlapping

9_______1_______3

x is NOT present in given list
y is present in given list

not overlapping

x is NOT present in given list
y is present in given list

not overlapping
not overlapping
not overlapping
not overlapping
not overlapping

x is NOT present in given list
y is present in given list

7_______32_______3

True

True

True

True

True

x is NOT present in given list
y is present in given list

7_______32_______3

True

False
True
False

True

Đầu 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
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not overlapping
not overlapping
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not overlapping

not overlapping
not overlapping
not overlapping
not overlapping
not overlapping

not overlapping

x is NOT present in given list
y is present in given list

not overlapping
not overlapping
not overlapping
not overlapping
not overlapping

not overlapping
not overlapping
not overlapping
not overlapping
not overlapping

x is NOT present in given list
y is present in given list

not overlapping
not overlapping
not overlapping
not overlapping
not overlapping

not overlapping
not overlapping
not overlapping
not overlapping
not overlapping

x is NOT present in given list
y is present in given list

7_______32_______3

True

not overlapping
not overlapping
not overlapping
not overlapping
not overlapping

True

True

True

x is NOT present in given list
y is present in given list

7_______32_______3

True

not overlapping
not overlapping
not overlapping
not overlapping
not overlapping

True

x is NOT present in given list
y is present in given list

not overlapping
not overlapping
not overlapping
not overlapping
not overlapping

95_______22_______5

not overlapping
not overlapping
not overlapping
not overlapping
not overlapping

63_______1_______81

x is NOT present in given list
y is present in given list

7_______32_______3

True

not overlapping

True

True

True

x is NOT present in given list
y is present in given list

7_______32_______3

True

not overlapping

True

Đầu 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 như

Toán 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

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True

not overlapping
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Đầu 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?

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Các toán tử thành viên được sử dụng trong Python là gì?

Python3

Python3

Python3

Toán tử nhận dạng

Python3

Toán tử thành viên trong Python là gì?

Có bao nhiêu loại toán tử thành viên được sử dụng trong Python?

4 toán tử trong Python là gì?

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