delete GrepV, use v=True argument

docs/reference.md

@@ -217,20 +217,16 @@ Same as `FilterKeys` but for `v` in `(k, v)` pairs
 >>> ['hello foo', 'world', 'awesome FOo'] | Grep('Foo', i=True) | Pipe(list)
 ['hello foo', 'awesome foo']
 
-```
-
-## GrepV
-
-```py
->>> ['hello foo', 'world', 'awesome FOo'] | GrepV('foo') | Pipe(list)
+# invert match
+>>> ['hello foo', 'world', 'awesome FOo'] | Grep('foo', v=True) | Pipe(list)
 ['world', 'awesome FOo']
->>> ['foo1', 'foo2', '3foo', 'bar1'] | GrepV('^foo.*') | Pipe(list)
+>>> ['foo1', 'foo2', '3foo', 'bar1'] | Grep('^foo.*', v=True) | Pipe(list)
 ['3foo', 'bar1']
 
-# case-insensitive
->>> ['hello foo', 'world', 'awesome FOo'] | GrepV('foo', i=True) | Pipe(list)
+# invert match and case-insensitive
+>>> ['hello foo', 'world', 'awesome FOo'] | Grep('foo', v=True, i=True) | Pipe(list)
 ['world']
->>> ['hello foo', 'world', 'awesome FOo'] | GrepV('Foo', i=True) | Pipe(list)
+>>> ['hello foo', 'world', 'awesome FOo'] | Grep('Foo', v=True, i=True) | Pipe(list)
 ['world']
 
 ```

pipe21.py

@@ -29,8 +29,7 @@ class ValueBy      (B): __ror__ = lambda self, it: it | Map(lambda x: (x, self.f
 class Append       (B): __ror__ = lambda self, it: it | Map(lambda x: (*x, self.f(x)))
 class Keys         (B): __ror__ = lambda self, it: it | Map(lambda kv: kv[0])
 class Values       (B): __ror__ = lambda self, it: it | Map(lambda kv: kv[1])
-class Grep         (B): __ror__ = lambda self, it: it | MapSwitch([(lambda x: self.kw.setdefault('i', False), str.lower)]) | Filter(lambda x: re.search(self.f.lower() if self.kw['i'] else self.f, x))
-class GrepV        (B): __ror__ = lambda self, it: it | MapSwitch([(lambda x: self.kw.setdefault('i', False), str.lower)]) | FilterFalse(lambda x: re.search(self.f.lower() if self.kw['i'] else self.f, x))
+class Grep         (B): __ror__ = lambda self, it: it | MapSwitch([(lambda x: self.kw.setdefault('i', False), str.lower)]) | (FilterFalse if self.kw.get('v', False) else Filter)(lambda x: re.search(self.f.lower() if self.kw['i'] else self.f, x))
 class IterLines    (B): __ror__ = lambda self, p: p | Pipe(open) | Pipe(lambda t: t | Map(str.strip) if self.kw.get('strip', True) else t)
 class Count        (B): __ror__ = lambda self, it: sum(1 for _ in it)
 class Slice        (B): __ror__ = lambda self, it: itertools.islice(it, self.f, *self.args)

tests/pipe_test.py

@@ -184,21 +184,21 @@ def test_grep(it, grep, expected):
     ],
 )
 def test_grep_v(it, grep, expected):
-    assert it | GrepV(grep) | Pipe(list) == expected
+    assert it | Grep(grep, v=True) | Pipe(list) == expected
 
 
 @pytest.mark.parametrize(
-    ('it', 'op', 'grep', 'i', 'expected'), [
-        (['hello foo', 'world', 'awesome FOo'], Grep, 'foo', False, ['hello foo']),
-        (['hello foo', 'world', 'awesome FOo'], Grep, 'foo', True, ['hello foo', 'awesome foo']),
-        (['hello foo', 'world', 'awesome FOo'], Grep, 'Foo', True, ['hello foo', 'awesome foo']),
-        (['hello foo', 'world', 'awesome FOo'], GrepV, 'foo', False, ['world', 'awesome FOo']),
-        (['hello foo', 'world', 'awesome FOo'], GrepV, 'foo', True, ['world']),
-        (['hello foo', 'world', 'awesome FOo'], GrepV, 'Foo', True, ['world']),
+    ('it', 'grep', 'v', 'i', 'expected'), [
+        (['hello foo', 'world', 'awesome FOo'], 'foo', False, False, ['hello foo']),
+        (['hello foo', 'world', 'awesome FOo'], 'foo', False, True, ['hello foo', 'awesome foo']),
+        (['hello foo', 'world', 'awesome FOo'], 'Foo', False, True, ['hello foo', 'awesome foo']),
+        (['hello foo', 'world', 'awesome FOo'], 'foo', True, False, ['world', 'awesome FOo']),
+        (['hello foo', 'world', 'awesome FOo'], 'foo', True, True, ['world']),
+        (['hello foo', 'world', 'awesome FOo'], 'Foo', True, True, ['world']),
     ],
 )
-def test_grep_i(it, op, grep, i, expected):
-    assert it | op(grep, i=i) | Pipe(list) == expected
+def test_grep_i(it, v, grep, i, expected):
+    assert it | Grep(grep, v=v, i=i) | Pipe(list) == expected
 
 
 def test_iter_lines(tmp_path):