Markpoint bug fixed (#505)

* Fix: #504 修复 markpoint 标记点标注不显示的 bug

* Update: changelog 文档更新

docs/zh-cn/changelog.md

@@ -1,12 +1,13 @@
 # 版本日志
 
-* ### version 0.4.2
+* ### version 0.5.0
 
     #### Added
     * [issue#311](https://github.com/pyecharts/pyecharts/issues/311) 提供 Jupyter Notebook 导出为 PDF 没有图片的解决方案
 
     #### Fixed
     * [issue#448](https://github.com/pyecharts/pyecharts/issues/448) 修复 Timeline 中 Overlap 图的 label_color 配置项不生效的 bug
+    * [issue#504](https://github.com/pyecharts/pyecharts/issues/504) 修复 markpoint 标记点标注不显示的 bug
 
 * ### version 0.4.1 - 2018.03.13（Current）
 

pyecharts/echarts/option.py

@@ -496,6 +496,7 @@ def _mark(
                 _pname = d.get('name', None)
                 _marktmp = {
                     "coord": _coord,
+                    "value": _coord[1],
                     "name": _pname,
                     "symbol": mark_point_symbol,
                     "symbolSize": mark_point_symbolsize,

test/test_line.py

@@ -38,7 +38,9 @@ def test_line_user_define_markpoint():
         is_smooth=True,
         mark_point=[{"coord": ["袜子", 80], "name": "这是我想要的第二个标记点"}],
     )
-    line.render()
+    html_content = line._repr_html_()
+    assert '"value": 80' in html_content
+    assert '"value": 10' in html_content
 
 
 def test_line_user_define_marks():