WIP: override get/setproperty and propertynames (#517)

* switch to 0.7/1.0 properties

* still support 0.6

* adjust runtests

* updated tests

* test fix (0.6)

* modified tests

* added getindex and haskey deprectations; fixed some internal warnings

* starequal in pynothing comparisons

* separate depwarns for getindex

* fix tests introduced in #594

* fixing deprecations...

* fixing deprecations again...

* fixed all deprecation warnings

* deprecate setindex! and fix warnings etc

* first (insufficient) modification of README

Author: carstenbauer

README.md

@@ -18,7 +18,7 @@ without copying them.
 ## Installation
 
 Within Julia, just use the package manager to run `Pkg.add("PyCall")` to
-install the files.  Julia 0.7 or later is required.
+install the files. Julia 0.7 or later is required.
 
 The latest development version of PyCall is available from
 <https://github.com/JuliaPy/PyCall.jl>.  If you want to switch to
@@ -139,7 +139,7 @@ we could call the Newton solver in scipy.optimize via:
 A macro exists for mimicking Python's "with statement". For example:
 
     @pywith pybuiltin("open")("file.txt","w") as f begin
-        f[:write]("hello")
+        f.write("hello")
     end
 
 The type of `f` can be specified with `f::T` (for example, to override automatic
@@ -162,18 +162,13 @@ example, using [Biopython](http://biopython.org/wiki/Seq) we can do:
     @pyimport Bio.Seq as s
     @pyimport Bio.Alphabet as a
     my_dna = s.Seq("AGTACACTGGT", a.generic_dna)
-    my_dna[:find]("ACT")
-
-whereas in Python the last step would have been `my_dna.find("ACT")`.
+    my_dna.find("ACT")
 
 ## Troubleshooting
 
 Here are solutions to some common problems:
 
-* As mentioned above, use `foo[:bar]` and `foo[:bar](...)` rather than `foo.bar` and `foo.bar(...)`,
-respectively, to access attributes and methods of Python objects.
-
-* By default, PyCall [doesn't include the current directory in the Python search path](https://github.com/JuliaPy/PyCall.jl/issues/48).   If you want to do that (in order to load a Python module from the current directory), just run `pushfirst!(PyVector(pyimport("sys")["path"]), "")`.
+* By default, PyCall [doesn't include the current directory in the Python search path](https://github.com/JuliaPy/PyCall.jl/issues/48).   If you want to do that (in order to load a Python module from the current directory), just run `pushfirst!(PyVector(pyimport("sys")."path"), "")`.
 
 ## Python object interfaces
 
@@ -199,9 +194,9 @@ dates/periods, and functions, along with tuples and arrays/lists
 thereof, but more are planned.  (Julia symbols are converted to Python
 strings.)
 
-Given `o::PyObject`, `o[:attribute]` is equivalent to `o.attribute`
+Given `o::PyObject`, `o.attribute` in Julia is equivalent to `o.attribute`
 in Python, with automatic type conversion.  To get an attribute as a
-`PyObject` without type conversion, do `o["attribute"]` instead.
+`PyObject` without type conversion, do `o."attribute"` instead.
 The `keys(o::PyObject)` function returns an array of the available
 attribute symbols.
 
@@ -338,10 +333,10 @@ and also by providing more type information to the Julia compiler.
 
 * `pyimport(s)`: Import the Python module `s` (a string or symbol) and
   return a pointer to it (a `PyObject`).  Functions or other symbols
-  in the module may then be looked up by `s[name]` where `name` is a
+  in the module may then be looked up by `s.name` where `name` is a
   string (for the raw `PyObject`) or symbol (for automatic
   type-conversion).  Unlike the `@pyimport` macro, this does not
-  define a Julia module and members cannot be accessed with `s.name`.
+  define a Julia module.
 
 * `py"..."` evaluates `"..."` as a Python string, equivalent to
   Python's [`eval`](https://docs.python.org/2/library/functions.html#eval) function, and returns the result
@@ -377,7 +372,7 @@ and also by providing more type information to the Julia compiler.
   instead use `w.pymember(:member)` (for the `PyAny` conversion) or
   `w.pymember("member")` (for the raw `PyObject`).  `pywrap` is rather
   inefficient since it converts *every* member of `o` at once; you
-  are generally encouraged to simply access members via `o[:member]`
+  are generally encouraged to simply access members via `o.member`
   rather than using `pywrap`.
 
 Occasionally, you may need to pass a keyword argument to Python that
@@ -411,15 +406,15 @@ For instance,
     @pyimport numpy.polynomial as P
     @pydef mutable struct Doubler <: P.Polynomial
         function __init__(self, x=10)
-            self[:x] = x
+            self.x = x
         end
         my_method(self, arg1::Number) = arg1 + 20
-        x2.get(self) = self[:x] * 2
+        x2.get(self) = self.x * 2
         function x2.set!(self, new_val)
-            self[:x] = new_val / 2
+            self.x = new_val / 2
         end
     end
-    Doubler()[:x2]
+    Doubler().x2
 
 is essentially equivalent to the following Python code:
 
@@ -450,22 +445,22 @@ Here's another example using [Tkinter](https://wiki.python.org/moin/TkInter):
 
     @pydef mutable struct SampleApp <: tk.Tk
         __init__(self, args...; kwargs...) = begin
-            tk.Tk[:__init__](self, args...; kwargs...)
-            self[:label] = tk.Label(text="Hello, world!")
-            self[:label][:pack](padx=10, pady=10)
+            tk.Tk.__init__(self, args...; kwargs...)
+            self.label = tk.Label(text="Hello, world!")
+            self.label.pack(padx=10, pady=10)
         end
     end
 
     app = SampleApp()
-    app[:mainloop]()
+    app.mainloop()
 
 Class variables are also supported:
 
     using PyCall
     @pydef mutable struct ObjectCounter
         obj_count = 0 # Class variable
         function __init__(::PyObject)
-            ObjectCounter[:obj_count] += 1
+            ObjectCounter.obj_count += 1
         end
     end
 

benchmarks/pywrapfn.jl

@@ -9,10 +9,7 @@ end
 
 function PyWrapFn(o::Union{PyObject, PyPtr}, nargs::Int, returntype::Type=PyObject)
     pyargsptr = ccall((@pysym :PyTuple_New), PyPtr, (Int,), nargs)
-    ret = PyNULL()
-    optr = o isa PyPtr ? o : o.o
-    pyincref_(optr)
-    return PyWrapFn{nargs, returntype}(optr, pyargsptr, ret)
+    return PyWrapFn{nargs, returntype}(pyincref_(PyPtr(o)), pyargsptr, PyNULL())
 end
 
 (pf::PyWrapFn{N, RT})(args...) where {N, RT} =