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, IndexedVar, Variable, a, c, d, k, m
from proveit.core_expr_types import b_1_to_n
from proveit.numbers import Add, DecimalSequence, one

# build up the expression from sub-expressions
sub_expr1 = Variable("_a", latex_format = r"{_{-}a}")
sub_expr2 = ExprRange(sub_expr1, IndexedVar(a, sub_expr1), one, m)
sub_expr3 = ExprRange(sub_expr1, IndexedVar(d, sub_expr1), one, k)
expr = ExprTuple(DecimalSequence(sub_expr2, Add(b_1_to_n), sub_expr3), DecimalSequence(sub_expr2, c, sub_expr3))

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(\texttt{\#}(a_{1}, a_{2}, \ldots, a_{m} ~ \left(b_{1} +  b_{2} +  \ldots +  b_{n}\right) ~ d_{1}, d_{2}, \ldots, d_{k}), \texttt{\#}(a_{1}, a_{2}, \ldots, a_{m} ~ c ~ d_{1}, d_{2}, \ldots, d_{k})\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, 6, 9
4	Literal
5	ExprTuple	7, 8, 9
6	Operation	operator: 10 operands: 11
7	ExprRange	lambda_map: 12 start_index: 20 end_index: 13
8	Variable
9	ExprRange	lambda_map: 14 start_index: 20 end_index: 15
10	Literal
11	ExprTuple	16
12	Lambda	parameter: 27 body: 17
13	Variable
14	Lambda	parameter: 27 body: 18
15	Variable
16	ExprRange	lambda_map: 19 start_index: 20 end_index: 21
17	IndexedVar	variable: 22 index: 27
18	IndexedVar	variable: 23 index: 27
19	Lambda	parameter: 27 body: 24
20	Literal
21	Variable
22	Variable
23	Variable
24	IndexedVar	variable: 25 index: 27
25	Variable
26	ExprTuple	27
27	Variable