new

.gitignore

@@ -5,7 +5,7 @@ __pycache__/
 
 # C extensions
 *.so
-
+/.idea/
 # Distribution / packaging
 .Python
 build/

.idea/.gitignore

@@ -0,0 +1,2 @@
+# Default ignored files
+/workspace.xml

.idea/deployment.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="PublishConfigData">
+    <serverData>
+      <paths name="pi@192.168.199.217:22">
+        <serverdata>
+          <mappings>
+            <mapping local="$PROJECT_DIR$" web="/" />
+          </mappings>
+        </serverdata>
+      </paths>
+      <paths name="pi@192.168.199.217:22 (1)">
+        <serverdata>
+          <mappings>
+            <mapping local="$PROJECT_DIR$" web="/" />
+          </mappings>
+        </serverdata>
+      </paths>
+    </serverData>
+  </component>
+</project>

.idea/inspectionProfiles/profiles_settings.xml

@@ -0,0 +1,6 @@
+<component name="InspectionProjectProfileManager">
+  <settings>
+    <option name="USE_PROJECT_PROFILE" value="false" />
+    <version value="1.0" />
+  </settings>
+</component>

.idea/misc.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="JavaScriptSettings">
+    <option name="languageLevel" value="ES6" />
+  </component>
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.9 (venv) (2)" project-jdk-type="Python SDK" />
+</project>

.idea/modules.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/pythonbook.iml" filepath="$PROJECT_DIR$/.idea/pythonbook.iml" />
+    </modules>
+  </component>
+</project>

.idea/pythonbook.iml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="PYTHON_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>

实例学习pandas/1 特征统计函数.py

@@ -0,0 +1,17 @@
+
+import pandas as pd
+
+df = pd.read_csv('..\data\learn_pandas.csv')
+df_demo = df[['Height', 'Weight']]
+print(df_demo.mean(),df_demo.max(),df_demo.quantile(0.75))
+
+# 此外，需要介绍的是 quantile, count, idxmax 这三个函数，它们分别返回的是
+# 分位数、
+# 非缺失值个数、
+# 最大值对应的索引
+
+print(df_demo.mean(axis=1).head())
+
+df_demo = df[['Gender','Transfer','Name']]
+print(df_demo.drop_duplicates(['Gender', 'Transfer']))
+

实例学习pandas/2 排序函数.py

@@ -0,0 +1,8 @@
+
+import pandas as pd
+
+df = pd.read_csv('..\data\learn_pandas.csv')
+df_demo = df[['Grade', 'Name', 'Height','Weight']].set_index(['Grade','Name'])
+a1 = df_demo.sort_values('Height').head()
+print(a1)
+

实例学习pandas/3 替换函数.py

@@ -0,0 +1,6 @@
+
+import pandas as pd
+
+s = pd.Series([-1, 1.2345, 100, -50])
+
+print(s.where(s<0, 100))

实例学习pandas/4 apply.py

@@ -0,0 +1,8 @@
+
+import pandas as pd
+
+df = pd.read_csv('..\data\learn_pandas.csv')
+df_demo = df[['Grade', 'Name', 'Height','Weight']].set_index(['Grade','Name'])
+a1 = df_demo.apply(lambda x:(x-x.mean()).abs().mean())
+print(a1)
+

实例学习pandas/5 滑窗对象.py

@@ -0,0 +1,7 @@
+
+import pandas as pd
+
+s = pd.Series([1,2,3,4,5])
+roller = s.rolling(window = 3)
+print(roller)
+print(s.shift(1))