Expression Reference
How to represent the different kinds of Python expressions as Expression Trees
Operations
Boolean Operation - and
A 'and' boolean operation between True and False
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Boolean Operation - or
An 'or' boolean operation between True and False
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Boolean Operation - sequence of and
A sequence of 'and' boolean operations
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Boolean Operation - mixing and & or
A boolean operations mixing 'and', 'or' in its expression. Operator 'and' has the precedence
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Named Expression aka Walrus Operator
An assignment expression, aka Walrus Operator, from PEP 572.
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Binary Operation - sum
A binary operation performing the sum between 1 and 2
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Binary Operation - difference
A binary operation performing the difference between 1 and 2
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Binary Operation - multiplication
A binary operation performing the multiplication between 1 and 2
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Binary Operation - division
A binary operation performing the division between 2 and 1
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Binary Operation - floor division
A binary operation performing floor division between 4 and 2
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Binary Operation - modulo
A binary operation performing 10 modulo 2
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Binary Operation - exponentiation
A binary operation performing 2 to the power of 10
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Binary Operation - bitwise shift left
A binary operation performing 1 bit shift to left on number 2
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Binary Operation - bitwise shift right
A binary operation performing 1 bit shift to right on number 4
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Binary Operation - bitwise or
A binary operation performing a bitwise 'or' between 6 and 1
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Binary Operation - bitwise xor
A binary operation performing the bitwise exclusive or between 1 and 1
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Binary Operation - bitwise and
A binary operation performing the bitwise and between 15 and 15
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Binary Operation - 2 consecutive operations
2 consecutive sum binary operation
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Unary Operation - unary positive
A unary positive operation
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Unary Operation - unary negation
A negative unary operation
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Unary Operation - bitwise negation
The bitwise negation, part of unary operations
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Functions
Lambda - one parameter
Lambda, an anonymous function containing only one parameter and one expression
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Call expression
Function call expression with every possible type of parameter
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Lambda
Lambda - no parameters
Lambda, an anonymous function containing only one expression and no parameters
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Lambda - full parameters kind
A Lambda function containing every single type of possible parameter
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Generics
If Expression
If expression with 1 as the result if the condition is True, else 0
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Collections
List - one element
List expression with only one single element
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
List - no elements
List expression containing no elements
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
List - multiple elements
List expression containing multiple elements
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Tuple - one element
Tuple expression with only one single element
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Tuple - no elements
Tuple expression containing no elements
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Tuple - multiple elements
Tuple expression containing multiple elements
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Dictionary - one element
Dictionary expression with only one single element
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Dictionary - no elements
Dictionary expression with no elements
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Dictionary - one kwarg argument
Dictionary expression with only one keyword argument
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Dictionary - multiple arguments
Dictionary expression with multiple arguments and kwargs
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Set - one element
Set expression with only one single element
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Set - multiple elements
Set expression containing multiple elements
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Comprehension
List Comprehension - one generator
A list comprehension with only one generator
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
List Comprehension - generators and filters
A list comprehension with 2 generators and a filter
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Set Comprehension - one generator
A set comprehension with only one generator
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Dictionary Comprehension - one generator
A dictionary comprehension giving for each number in numbers the number as key and its power of 2 as value
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Generator Expression - one generator
A generator expression with only one generator
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Keyword
Await expression
Await expression returning number 404
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Yield expression
Yield expression returning number 404
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Yield From expression
Yield From expression yielding from variable mylist
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Comparison
Compare - equality
Compare expression using equality operator
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Compare - difference
Compare expression using difference comparison operator
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Compare - less than
Compare expression using less than comparison operator
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Compare - less than or equal to
Compare expression using less than or equal to comparison operator
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Compare - greater than
Compare expression using greater than comparison operator
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Compare - greater than or equal to
Compare expression using greater than or equal to comparison operator
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Compare - identity equality operator
Compare expression using the identity equality operator stating if the objects compared are the same
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Compare - identity difference operator
Compare expression using the identity difference operator stating if the objects compared are not the same
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Compare - 'in' membership operator
Compare expression using the 'in' membership operator to test if a sequence is present in an object
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Compare expression using the 'not in' membership operator to test if a sequence is not present in an object
Compare expression
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Constant
Constant expression
Constant literal expression of a integer number
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Constant literal expression of a string
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Attribute
Attribute
An object attribute expression
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Subscript
Subscript expression
A subscript expression of a sequence with the zero position being accessed
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Sliced Subscription
A subscription giving a slice of the sequence
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Name
Name expression
A variable name being accessed
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
f-string
Formatted String - no formatted value
A simple formatted string used without inner formatted values
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is:
Formatted String - single formatted value
A formatted string with an inner formatted value
Specification
Given the following snippet of code:
The Expression Tree for the highlighted expression is: