order-book - pypi Package Compare versions

Comparing version 0.5.0 to 0.6.0

CHANGES.md

 ## Changelog
 
+### 0.6.0 (2022-10-19)
+ * Update: Drop support for python 3.7
+ * Feature: to_list method
+ * Bugfix: Initialize iterator correctly
+
 ### 0.5.0 (2022-08-23)
@@ -4,0 +9,0 @@ * Bugfix: fix segmentation fault when calculating checksum on empty orderbook

order_book.egg-info/PKG-INFO

 Metadata-Version: 2.1
 Name: order-book
-Version: 0.5.0
+Version: 0.6.0
 Summary: A fast orderbook implementation, in C, for Python
@@ -29,3 +29,3 @@ Home-page: https://github.com/bmoscon/orderbook
 [![License](https://img.shields.io/badge/license-GLPv3-blue.svg)](LICENSE)
-![Python](https://img.shields.io/badge/Python-3.7+-green.svg)
+![Python](https://img.shields.io/badge/Python-3.8+-green.svg)
 [![PyPi](https://img.shields.io/badge/PyPi-order--book-brightgreen)](https://pypi.python.org/pypi/order-book)
@@ -148,2 +148,7 @@ ![coverage-lines](https://img.shields.io/badge/coverage%3A%20lines-84.6%25-blue)
 
+### 0.6.0 (2022-10-19)
+ * Update: Drop support for python 3.7
+ * Feature: to_list method
+ * Bugfix: Initialize iterator correctly
+
 ### 0.5.0 (2022-08-23)
@@ -150,0 +155,0 @@ * Bugfix: fix segmentation fault when calculating checksum on empty orderbook

orderbook/sorteddict.c

@@ -342,2 +342,62 @@ /*
 
+PyObject* SortedDict_tolist(SortedDict *self, PyObject *args, PyObject *kwargs)
+{
+    static char* keywords[] = {"n_levels", NULL};
+    
+    int n_levels = -1;
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", keywords, &n_levels)) {
+        return NULL;
+    }
+
+    int data_len = PyDict_Size(self->data);
+    // Set n_levels to data_len if n_levels is the default value
+    if (n_levels == -1 | n_levels > data_len) {
+        n_levels = data_len;
+    }
+
+    if (EXPECT(PyErr_Occurred() != NULL, 0)) {
+        return NULL;
+    }
+
+    if (EXPECT(update_keys(self), 0)) {
+        return NULL;
+    }
+
+    PyObject *ret = PyList_New(n_levels);
+    if (EXPECT(!ret, 0)) {
+        return NULL;
+    }
+
+    for (int i = 0; i < n_levels; ++i) {
+        // new reference
+        PyObject *key = PySequence_GetItem(self->keys, i);
+        if (EXPECT(!key, 0)) {
+            return NULL;
+        }
+
+        // borrowed reference
+        PyObject *value = PyDict_GetItem(self->data, key);
+        if (EXPECT(!value, 0)) {
+            Py_DECREF(key);
+            return value;
+        }
+
+        // Build tuple of (i.e., key, value)
+        PyObject *tuple_entry = PyTuple_New(2);
+        if (EXPECT(!tuple_entry, 0)) {
+            Py_DECREF(key);
+            return NULL;
+        }
+        PyTuple_SET_ITEM(tuple_entry, 0, key);
+        Py_INCREF(value);
+        PyTuple_SET_ITEM(tuple_entry, 1, value);
+
+        // Add tuple to list
+        PyList_SET_ITEM(ret, i, tuple_entry);
+    }
+    
+    return ret;
+}
+
+
 PyObject* SortedDict_truncate(SortedDict *self, PyObject *Py_UNUSED(ignored))
@@ -438,2 +498,9 @@ {
 /* iterator methods */
+PyObject *SortedDict_getiter(SortedDict *self)
+{
+    Py_INCREF(self);
+    self->iterator_index = -1;
+    return self;
+}
+
 PyObject *SortedDict_next(SortedDict *self)
@@ -440,0 +507,0 @@ {

orderbook/sorteddict.h

@@ -45,2 +45,3 @@ /*
 PyObject* SortedDict_todict(SortedDict *self, PyObject *unused, PyObject *kwargs);
+PyObject* SortedDict_tolist(SortedDict *self, PyObject *args, PyObject *kwargs);
 PyObject* SortedDict_truncate(SortedDict *self, PyObject *Py_UNUSED(ignored));
@@ -54,2 +55,3 @@
 
+PyObject *SortedDict_getiter(SortedDict *self);
 PyObject *SortedDict_next(SortedDict *self);
@@ -73,2 +75,3 @@
     {"to_dict", (PyCFunction) SortedDict_todict, METH_VARARGS | METH_KEYWORDS, "return a python dictionary, sorted by keys"},
+    {"to_list", (PyCFunction) SortedDict_tolist, METH_VARARGS | METH_KEYWORDS, "return a list of key, value tuple with length specified in input argument. if no argument is passed or the argument is larger than length of self->data, return items with length of self->data."},
     {NULL}
@@ -105,3 +108,3 @@ };
     .tp_as_sequence = &SortedDict_seq,
-    .tp_iter  = PyObject_SelfIter,
+    .tp_iter  = (getiterfunc) SortedDict_getiter,
     .tp_iternext = (iternextfunc) SortedDict_next,
@@ -108,0 +111,0 @@ .tp_dictoffset = 0,

PKG-INFO

 Metadata-Version: 2.1
 Name: order_book
-Version: 0.5.0
+Version: 0.6.0
 Summary: A fast orderbook implementation, in C, for Python
@@ -29,3 +29,3 @@ Home-page: https://github.com/bmoscon/orderbook
 [![License](https://img.shields.io/badge/license-GLPv3-blue.svg)](LICENSE)
-![Python](https://img.shields.io/badge/Python-3.7+-green.svg)
+![Python](https://img.shields.io/badge/Python-3.8+-green.svg)
 [![PyPi](https://img.shields.io/badge/PyPi-order--book-brightgreen)](https://pypi.python.org/pypi/order-book)
@@ -148,2 +148,7 @@ ![coverage-lines](https://img.shields.io/badge/coverage%3A%20lines-84.6%25-blue)
 
+### 0.6.0 (2022-10-19)
+ * Update: Drop support for python 3.7
+ * Feature: to_list method
+ * Bugfix: Initialize iterator correctly
+
 ### 0.5.0 (2022-08-23)
@@ -150,0 +155,0 @@ * Bugfix: fix segmentation fault when calculating checksum on empty orderbook

README.md

 # Orderbook
 
 [![License](https://img.shields.io/badge/license-GLPv3-blue.svg)](LICENSE)
-![Python](https://img.shields.io/badge/Python-3.7+-green.svg)
+![Python](https://img.shields.io/badge/Python-3.8+-green.svg)
 [![PyPi](https://img.shields.io/badge/PyPi-order--book-brightgreen)](https://pypi.python.org/pypi/order-book)
@@ -6,0 +6,0 @@ ![coverage-lines](https://img.shields.io/badge/coverage%3A%20lines-84.6%25-blue)

setup.py

@@ -38,3 +38,3 @@ '''
     name='order_book',
-    version='0.5.0',
+    version='0.6.0',
     author="Bryant Moscon",
@@ -41,0 +41,0 @@ author_email="[e-mail]",

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