Revision history [back]
 | 1 | initial version |
For matrices, I don't know, this is a complex topic in Sage. For tuple of pairs, this is pure Python, and I suggest:
def is_a_pair(a):
return isinstance(a,tuple) and len(a)==2
def is_a_tuple_of_pairs(A):
if not isinstance(A,tuple):
return False
return all (is_a_pair(a) for a in A)
For matrices, I don't know, this is a complex topic in Sage. For tuple tuples of pairs, this is pure Python, and I suggest:
def is_a_pair(a):
return isinstance(a,tuple) and len(a)==2
def is_a_tuple_of_pairs(A):
if not isinstance(A,tuple):
return False
return all (is_a_pair(a) for a in A)
| | 3 | addition |
For matrices, I don't know, this is a complex topic in Sage. For tuples of pairs, this is pure Python, and I suggest:
def is_a_pair(a):
return isinstance(a,tuple) and len(a)==2
def is_a_tuple_of_pairs(A):
if not isinstance(A,tuple):
return False
return all (is_a_pair(a) for a in A)
Note that if you accept lists in addition to tuples, you can use:
isinstance(a,(list,tuple))
inside these functions and so on.
