Expression of type ExprTuple

from the theory of proveit.core_expr_types.expr_arrays

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 A, ExprRange, ExprTuple, IndexedVar, Variable, n
from proveit.numbers import one

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

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(A, A,A_{{_{-}b}, 1}, A_{{_{-}b}, 2}, \ldots, A_{{_{-}b}, n}, A, A\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	7, 7, 1, 7, 7
1	ExprRange	lambda_map: 2 start_index: 3 end_index: 4
2	Lambda	parameter: 10 body: 6
3	Literal
4	Variable
5	ExprTuple	10
6	IndexedVar	variable: 7 indices: 8
7	Variable
8	ExprTuple	9, 10
9	Variable
10	Variable