Initial commit: OCA Report packages (45 packages)

odoo-bringout-oca-mis-builder-mis_builder/mis_builder/models/aggregate.py

@@ -0,0 +1,129 @@
+# Copyright 2014 ACSONE SA/NV (<http://acsone.eu>)
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
+
+
+def _sum(lst):
+    """Same as stdlib sum but returns None instead of 0
+    in case of empty sequence.
+
+    >>> sum([1])
+    1
+    >>> _sum([1])
+    1
+    >>> sum([1, 2])
+    3
+    >>> _sum([1, 2])
+    3
+    >>> sum([])
+    0
+    >>> _sum([])
+    """
+    if not lst:
+        return None
+    return sum(lst)
+
+
+def _avg(lst):
+    """Arithmetic mean of a sequence. Returns None in case of empty sequence.
+
+    >>> _avg([1])
+    1.0
+    >>> _avg([1, 2])
+    1.5
+    >>> _avg([])
+    """
+    if not lst:
+        return None
+    return sum(lst) / float(len(lst))
+
+
+def _min(*args):
+    """Same as stdlib min but returns None instead of exception
+    in case of empty sequence.
+
+    >>> min(1, 2)
+    1
+    >>> _min(1, 2)
+    1
+    >>> min([1, 2])
+    1
+    >>> _min([1, 2])
+    1
+    >>> min(1)
+    Traceback (most recent call last):
+      File "<stdin>", line 1, in ?
+    TypeError: 'int' object is not iterable
+    >>> _min(1)
+    Traceback (most recent call last):
+      File "<stdin>", line 1, in ?
+    TypeError: 'int' object is not iterable
+    >>> min([1])
+    1
+    >>> _min([1])
+    1
+    >>> min()
+    Traceback (most recent call last):
+      File "<stdin>", line 1, in ?
+    TypeError: min expected at least 1 argument, got 0
+    >>> _min()
+    Traceback (most recent call last):
+      File "<stdin>", line 1, in ?
+    TypeError: min expected at least 1 argument, got 0
+    >>> min([])
+    Traceback (most recent call last):
+      File "<stdin>", line 1, in ?
+    ValueError: min() arg is an empty sequence
+    >>> _min([])
+    """
+    if len(args) == 1 and not args[0]:
+        return None
+    return min(*args)
+
+
+def _max(*args):
+    """Same as stdlib max but returns None instead of exception
+    in case of empty sequence.
+
+    >>> max(1, 2)
+    2
+    >>> _max(1, 2)
+    2
+    >>> max([1, 2])
+    2
+    >>> _max([1, 2])
+    2
+    >>> max(1)
+    Traceback (most recent call last):
+      File "<stdin>", line 1, in ?
+    TypeError: 'int' object is not iterable
+    >>> _max(1)
+    Traceback (most recent call last):
+      File "<stdin>", line 1, in ?
+    TypeError: 'int' object is not iterable
+    >>> max([1])
+    1
+    >>> _max([1])
+    1
+    >>> max()
+    Traceback (most recent call last):
+      File "<stdin>", line 1, in ?
+    TypeError: max expected at least 1 argument, got 0
+    >>> _max()
+    Traceback (most recent call last):
+      File "<stdin>", line 1, in ?
+    TypeError: max expected at least 1 argument, got 0
+    >>> max([])
+    Traceback (most recent call last):
+      File "<stdin>", line 1, in ?
+    ValueError: max() arg is an empty sequence
+    >>> _max([])
+    """
+    if len(args) == 1 and not args[0]:
+        return None
+    return max(*args)
+
+
+if __name__ == "__main__":  # pragma: no cover
+    import doctest
+
+    doctest.testmod()