diff --git a/python/prebuild.py b/python/prebuild.py
index 7a30fb1..d97fa08 100644
--- a/python/prebuild.py
+++ b/python/prebuild.py
@@ -32,6 +32,22 @@ def gen_pyplot_functions(dub_root):
         f.write("\n".join(functions))
 
 
+def gen_backend_pdf_functions(dub_root):
+    '''
+    generate 'backend_pdf_functions.txt' for matplotlibd.backends.backends_pdf.
+    '''
+    import matplotlib.backends.backend_pdf
+    from string import lowercase
+
+    functions = filter(lambda i: i[0] != '_' or i[0] in lowercase,
+                       extract_function_names(matplotlib.backends.backend_pdf))
+
+    with open(dub_root + "/views/backend_pdf_functions.txt", "w") as f:
+        f.write("\n".join(functions))
+
+        
+
 if __name__ == '__main__':
     from sys import argv
     gen_pyplot_functions(argv[1])
+    gen_backend_pdf_functions(argv[1])
diff --git a/source/matplotlibd/backend_pdf.d b/source/matplotlibd/backend_pdf.d
new file mode 100644
index 0000000..e2ccea1
--- /dev/null
+++ b/source/matplotlibd/backend_pdf.d
@@ -0,0 +1,49 @@
+module matplotlibd.backend_pdf;
+import matplotlibd.core.pycall;
+import matplotlibd.core.translate;
+
+private:
+
+string py_script = "import matplotlib.backends.backend_pdf\n";
+
+immutable string backend_pdf_funcs = (){
+    import std.string: splitLines;
+
+    string[] method_names = import("backend_pdf_functions.txt").splitLines;
+    string backend_pdf_funcs;
+
+    foreach(name; method_names) {
+      backend_pdf_funcs ~=
+            "void " ~ name ~ "(T...)(T a)" ~
+            "{import std.format: format;" ~
+            "string p;if(a.length>0){foreach(i;a){p~=parseArgs(i);}" ~
+            "p = p[0..$-1];}py_script~=format(\"plt."~ name ~ "(%s)\n\",p);";
+      
+      backend_pdf_funcs ~= "}\n";
+	
+    }
+
+    return backend_pdf_funcs;
+}();
+
+
+public:
+
+import matplotlibd.core.translate: False, True, None;
+
+
+void clear() {
+    py_script = "import matplotlib.backends.backend_pdf\n";
+}
+
+mixin(backend_pdf_funcs);
+
+/*unittest {
+    import std.string;
+    auto script = py_script ~ "plt.plot([1, 2],[2, 4],\"r-\",lw=2)\n";
+    plot([1, 2], [2, 4], "r-", ["lw": 2]);
+    assert(script == py_script);
+    clear();
+    assert(py_script == "import matplotlib.pyplot as plt\n");
+}
+*/