update code in python_base, add .gitignore

Author: xianhu

.gitignore

@@ -0,0 +1,16 @@
+# Created by .ignore support plugin (hsz.mobi)
+*.[oa]
+*.py[co]
+*.exe
+*.log
+*.out
+*.dat
+*.txt
+*.temp
+*.png
+.*
+
+test/
+data/
+build/
+captcha.jpeg

README.md

@@ -1,2 +1,4 @@
 # LearnPython
 以撸代码的形式学习Python
+
+## python_base.py: 千行代码入门Python