Expression of type ExprTuple

from the theory of proveit.numbers.summation

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, k
from proveit.logic import InSet
from proveit.numbers import Add, Interval, eight, nine, one, subtract, two

# build up the expression from sub-expressions
sub_expr1 = subtract(k, two)
expr = ExprTuple(Conditional(sub_expr1, InSet(k, Interval(Add(eight, one), nine))), Conditional(sub_expr1, InSet(k, Interval(nine, nine))))

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(k - 2 \textrm{ if } k \in \{8 + 1~\ldotp \ldotp~9\}, k - 2 \textrm{ if } k \in \{9~\ldotp \ldotp~9\}\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: 4 condition: 3
2	Conditional	value: 4 condition: 5
3	Operation	operator: 8 operands: 6
4	Operation	operator: 22 operands: 7
5	Operation	operator: 8 operands: 9
6	ExprTuple	12, 10
7	ExprTuple	12, 11
8	Literal
9	ExprTuple	12, 13
10	Operation	operator: 17 operands: 14
11	Operation	operator: 15 operand: 20
12	Variable
13	Operation	operator: 17 operands: 18
14	ExprTuple	19, 21
15	Literal
16	ExprTuple	20
17	Literal
18	ExprTuple	21, 21
19	Operation	operator: 22 operands: 23
20	Literal
21	Literal
22	Literal
23	ExprTuple	24, 25
24	Literal
25	Literal