[Python.NET] Stricter types in 3.0

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Hello, as was discussed in the bi-weekly meeting, the newest version seems
to introduce stricter type checking. Here's a snippet that exhibits two
issues.

using (Py.GIL())
{
    dynamic sysmod = Py.Import("sys");
    dynamic syspath = sysmod.path;
    bool found = false;
    foreach (var path in syspath)
    {
        if (path == Path.GetFullPath("some/test/path/").Replace("\\", "/"))
        {
            found = true;
            break;
        }
    }
}

The first is a runtime exception with syspath:
Microsoft.CSharp.RuntimeBinder.RuntimeBinderException : Cannot implicitly
convert type 'Python.Runtime.PyObject' to 'System.Collections.IEnumerable'.
An explicit conversion exists (are you missing a cast?)
The second is maybe a non-issue, but I think it used to work. If syspath is
made to be of type PyList there is now a compiler error: error CS0019:
Operator '==' cannot be applied to operands of type 'PyObject' and 'string'


Thanks

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<div dir=3D"ltr"><div>Hello, as was discussed in the bi-weekly meeting, the=
 newest version seems to introduce stricter type checking. Here&#39;s a sni=
ppet that exhibits two issues.<br></div><div><br></div><div>using (Py.GIL()=
)<br>{<br>=C2=A0 =C2=A0 dynamic sysmod =3D Py.Import(&quot;sys&quot;);<br>=
=C2=A0 =C2=A0 dynamic syspath =3D sysmod.path;<br>=C2=A0 =C2=A0 bool found =
=3D false;<br>=C2=A0 =C2=A0 foreach (var path in syspath)<br>=C2=A0 =C2=A0 =
{<br>=C2=A0 =C2=A0 =C2=A0 =C2=A0 if (path =3D=3D Path.GetFullPath(&quot;som=
e/test/path/&quot;).Replace(&quot;\\&quot;, &quot;/&quot;))<br>=C2=A0 =C2=
=A0 =C2=A0 =C2=A0 {<br>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 found =3D =
true;<br>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 break;<br>=C2=A0 =C2=A0 =
=C2=A0 =C2=A0 }<br>=C2=A0 =C2=A0 }<br>}</div><div><br></div><div>The first =
is a runtime exception with syspath: Microsoft.CSharp.RuntimeBinder.Runtime=
BinderException : Cannot implicitly convert type &#39;Python.Runtime.PyObje=
ct&#39; to &#39;System.Collections.IEnumerable&#39;. An explicit conversion=
 exists (are you missing a cast?)</div><div>The second is maybe a non-issue=
, but I think it used to work. If syspath is made to be of type PyList ther=
e is now a compiler error: error CS0019: Operator &#39;=3D=3D&#39; cannot b=
e applied to operands of type &#39;PyObject&#39; and &#39;string&#39;</div>=
<div><br></div><div><br></div><div>Thanks</div></div>

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