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, B, C, D, ExprTuple, IndexedVar, Variable, j

# build up the expression from sub-expressions
sub_expr1 = [Variable("_a", latex_format = r"{_{-}a}"), j]
expr = ExprTuple(IndexedVar(A, sub_expr1), IndexedVar(B, sub_expr1), IndexedVar(C, sub_expr1), IndexedVar(D, sub_expr1))

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}, j}, B_{{_{-}a}, j}, C_{{_{-}a}, j}, D_{{_{-}a}, j}\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	IndexedVar	variable: 5 indices: 9
2	IndexedVar	variable: 6 indices: 9
3	IndexedVar	variable: 7 indices: 9
4	IndexedVar	variable: 8 indices: 9
5	Variable
6	Variable
7	Variable
8	Variable
9	ExprTuple	10, 11
10	Variable
11	Variable