Moving from dill to pickle for writing dump files

docs/requirements.txt

@@ -1,4 +1,3 @@
-dill
 h5py
 ipykernel
 jupyter

requirements.txt

@@ -1,4 +1,3 @@
-dill
 h5py
 matplotlib
 numpy

setup.py

@@ -52,7 +52,7 @@ def read_version():
                  ],
 
     packages=find_packages(),
-    install_requires=["dill", "h5py", "matplotlib", "numpy", "scipy"],
+    install_requires=["h5py", "matplotlib", "numpy", "scipy"],
     include_package_data=True,
     zip_safe=False,
 )

simframe/io/dump.py

@@ -1,4 +1,4 @@
-import dill
+import pickle
 
 
 def writedump(object, filename="object.dmp"):
@@ -11,7 +11,7 @@ def writedump(object, filename="object.dmp"):
     filename : str, optional, default : "object.dmp"
         path to file to be written"""
     with open(filename, "wb") as dumpfile:
-        dill.dump(object, dumpfile)
+        pickle.dump(object, dumpfile)
 
 
 def readdump(filename):
@@ -32,5 +32,5 @@ def readdump(filename):
     Only read dump files from sources you trust.
     Malware can be injected."""
     with open(filename, "rb") as dumpfile:
-        obj = dill.load(dumpfile)
+        obj = pickle.load(dumpfile)
     return obj

tests/io/test_namespacewriter.py

@@ -22,6 +22,10 @@ def test_namespacewriter_getfilename():
 
 
 def test_namespacewriter_simple():
+
+    global dYdx
+    global dx
+
     f = Frame()
     f.addfield("Y", 1.)
     f.addgroup("A")

tests/io/test_reader.py

@@ -47,6 +47,10 @@ def f():
 
 
 def test_simple_read_files():
+
+    global dYdx
+    global dx
+
     f = Frame()
     f.addgroup("A")
     f.A.addfield("B", [0., 0.])