Expression of type ExprTuple

from the theory of proveit.numbers.functions

import proveit
# Automation is not needed when building an expression:
proveit.defaults.automation = False # This will speed things up.
proveit.defaults.inline_pngs = False # Makes files smaller.
%load_expr # Load the stored expression as 'stored_expr'
# import Expression classes needed to build the expression
from proveit import Conditional, ExprTuple, i, j
from proveit.logic import Equals, NotEquals
from proveit.numbers import one, zero

# build up the expression from sub-expressions
expr = ExprTuple(Conditional(one, Equals(i, j)), Conditional(zero, NotEquals(i, j)))

expr:

# check that the built expression is the same as the stored expression
assert expr == stored_expr
assert expr._style_id == stored_expr._style_id
print("Passed sanity check: expr matches stored_expr")

Passed sanity check: expr matches stored_expr

# Show the LaTeX representation of the expression for convenience if you need it.
print(stored_expr.latex())

\left(1 \textrm{ if } i = j, 0 \textrm{ if } i \neq j\right)

stored_expr.style_options()

name	description	default	current value	related methods
wrap_positions	position(s) at which wrapping is to occur; 'n' is after the nth comma.	()	()	('with_wrapping_at',)
justification	if any wrap positions are set, justify to the 'left', 'center', or 'right'	left	left	('with_justification',)

# display the expression information
stored_expr.expr_info()

	core type	sub-expressions	expression
0	ExprTuple	1, 2
1	Conditional	value: 3 condition: 4
2	Conditional	value: 5 condition: 6
3	Literal
4	Operation	operator: 7 operands: 9
5	Literal
6	Operation	operator: 8 operands: 9
7	Literal
8	Literal
9	ExprTuple	10, 11
10	Variable
11	Variable