Expression of type ExprTuple

from the theory of proveit.numbers.numerals.decimals

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 ExprRange, ExprTuple, Variable
from proveit.core_expr_types import Len
from proveit.numbers import Add, Neg, four, nine, one

# build up the expression from sub-expressions
sub_expr1 = Variable("_a", latex_format = r"{_{-}a}")
sub_expr2 = Neg(one)
sub_expr3 = Add(one, sub_expr2, one)
expr = ExprTuple(Len(operands = [sub_expr3, sub_expr3, sub_expr3, sub_expr3, sub_expr3, Add(four, sub_expr2, one), sub_expr3, sub_expr3, sub_expr3]), Len(operands = [ExprRange(sub_expr1, sub_expr1, one, 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(|\left(1 - 1 + 1, 1 - 1 + 1, 1 - 1 + 1, 1 - 1 + 1, 1 - 1 + 1, 4 - 1 + 1, 1 - 1 + 1, 1 - 1 + 1, 1 - 1 + 1\right)|, |\left(1, 2, \ldots, 9\right)|\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	Operation	operator: 4 operands: 3
2	Operation	operator: 4 operands: 5
3	ExprTuple	7, 7, 7, 7, 7, 6, 7, 7, 7
4	Literal
5	ExprTuple	8
6	Operation	operator: 10 operands: 9
7	Operation	operator: 10 operands: 11
8	ExprRange	lambda_map: 12 start_index: 20 end_index: 13
9	ExprTuple	14, 15, 20
10	Literal
11	ExprTuple	20, 15, 20
12	Lambda	parameter: 19 body: 19
13	Literal
14	Literal
15	Operation	operator: 17 operand: 20
16	ExprTuple	19
17	Literal
18	ExprTuple	20
19	Variable
20	Literal