Rename fmpq_mpoly.zpoly into primitive, zcontent into content

Also fix their docstring tests.

Author: magv

README.md

@@ -168,14 +168,14 @@ CHANGELOG
 
 Contributors (0.10.0):
 
-- Insert Name (IN)
+- Vitaly Magerya (VM)
 
 Changes (0.10.0):
 
-- [gh-322](https://github.com/flintlib/python-flint/pull/322), Add `zcontent`
-  and `zpoly` methods to `fmpq_mpoly`, to get the primitive integer polynomial
-  of self and the `fmpq` content (the internal representation of the
-  `fmpq_mpoly`). (IN)
+- [gh-421](https://github.com/flintlib/python-flint/pull/421),
+  Add `primitive` and `content` methods to `fmpq_mpoly`, to get
+  the primitive integer polynomial and the `fmpq` content, which
+  form the internal representation of the `fmpq_mpoly`. (VM)
 
 0.9.0
 -----

src/flint/types/fmpq_mpoly.pyi

@@ -102,8 +102,8 @@ class fmpq_mpoly(flint_mpoly[fmpq_mpoly_ctx, fmpq, ifmpq]):
     def xgcd(self, other: fmpq_mpoly, /) -> fmpq: ...
     def term_content(self) -> fmpq_mpoly: ...
 
-    def zpoly(self) -> fmpz_mpoly: ...
-    def zcontent(self) -> fmpq: ...
+    def primitive(self) -> fmpz_mpoly: ...
+    def content(self) -> fmpq: ...
 
     def factor(self) -> tuple[fmpq, list[tuple[fmpq_mpoly, int]]]: ...
     def factor_squarefree(self) -> tuple[fmpq, list[tuple[fmpq_mpoly, int]]]: ...

src/flint/types/fmpq_mpoly.pyx

@@ -785,30 +785,30 @@ cdef class fmpq_mpoly(flint_mpoly):
         fmpq_mpoly_term_content(res.val, self.val, self.ctx.val)
         return res
 
-    def zpoly(self):
+    def primitive(self):
         """
         Return the integer polynomial of ``self``. The product
-        of this and ``self.zcontent()``, represents the whole
+        of this and ``self.content()``, represents the whole
         polynomial.
 
             >>> ctx = fmpq_mpoly_ctx.get(("x","y"))
             >>> x, y = ctx.gens()
-            >>> (fmpq(2,3)*x + fmpq(2,5)*y).zpoly()
+            >>> (x*2/3 + y*2/5).primitive()
             5*x + 3*y
         """
         cdef fmpz_mpoly_ctx zctx = fmpz_mpoly_ctx.from_context(self.ctx)
         cdef fmpz_mpoly res = create_fmpz_mpoly(zctx)
         fmpz_mpoly_set(res.val, self.val.zpoly, zctx.val)
         return res
 
-    def zcontent(self):
+    def content(self):
         """
         Return the content of ``self``. The product of this and
-        ``self.zpoly()``, represents the whole polynomial.
+        ``self.primitive()``, represents the whole polynomial.
 
             >>> ctx = fmpq_mpoly_ctx.get(("x","y"))
             >>> x, y = ctx.gens()
-            >>> (fmpq(2,3)*x + fmpq(2,5)*y).zcontent()
+            >>> (x*2/3 + y*2/5).content()
             2/15
         """
         cdef fmpq res = fmpq.__new__(fmpq)