Expression of type ExprTuple

from the theory of proveit.numbers.absolute_value

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, b, c, n, x
from proveit.numbers import Abs, one

# build up the expression from sub-expressions
sub_expr1 = Variable("_a", latex_format = r"{_{-}a}")
expr = ExprTuple(Abs(a), Abs(b), ExprRange(sub_expr1, Abs(IndexedVar(x, sub_expr1)), one, n), Abs(c))

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|a\right|, \left|b\right|,\left|x_{1}\right|, \left|x_{2}\right|, \ldots, \left|x_{n}\right|, \left|c\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, 3, 4
1	Operation	operator: 15 operand: 11
2	Operation	operator: 15 operand: 12
3	ExprRange	lambda_map: 7 start_index: 8 end_index: 9
4	Operation	operator: 15 operand: 14
5	ExprTuple	11
6	ExprTuple	12
7	Lambda	parameter: 20 body: 13
8	Literal
9	Variable
10	ExprTuple	14
11	Variable
12	Variable
13	Operation	operator: 15 operand: 17
14	Variable
15	Literal
16	ExprTuple	17
17	IndexedVar	variable: 18 index: 20
18	Variable
19	ExprTuple	20
20	Variable