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, n, x
from proveit.core_expr_types import x_1_to_n
from proveit.numbers import Abs, Add, one

# build up the expression from sub-expressions
sub_expr1 = Variable("_a", latex_format = r"{_{-}a}")
expr = ExprTuple(Abs(Add(x_1_to_n)), Add(ExprRange(sub_expr1, Abs(IndexedVar(x, sub_expr1)), one, n)))

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