update if & for & while

Author: crazy1235

.idea/PythonPracticeProject.iml

@@ -0,0 +1,88 @@
+# -*- coding: utf-8 -*-
+
+# if 语句
+print '------------- if 语句 ----------------'
+
+age = 23
+if age >= 12:
+    print 'I am not 12, I am only 23!'
+    print 'haha~~'
+print "end"
+
+# if else
+print '------------- if else ----------------'
+if not age < 20:
+    print 'come on baby!'
+
+if age >= 30:
+    print 'I am an old man!'
+else:
+    print 'I am a teenager!'
+
+# if else if else
+print '------------- if else if else ----------------'
+if age >= 18:
+    print 'adult'
+else:
+    if age >= 6:
+        print 'teenager'
+    else:
+        if age >= 3:
+            print 'kid'
+        else:
+            print 'baby'
+
+print '------------ elif --> else if -------------'
+if age >= 18:
+    print 'adult'
+elif age >= 6:
+    print 'teenager'
+elif age >= 3:
+    print 'kid'
+else:
+    print 'baby'
+
+# for 循环
+print '------------- for 循环 ----------------'
+names = ['micheal', 'lincoln', 'benjamin', 'john', 'fernando', 'sucre', 'bagel']
+for name in names:
+    print name
+
+# while 循环
+print '------------- while 循环 ----------------'
+a = 10
+b = 9
+while a >= b:
+    print b
+    b = b + 1
+print 'a = ', a, ' b = ', b
+
+# break 退出循环
+print '------------- break 退出循环 ----------------'
+
+c = 20
+while b < c:
+    print b
+    b = b + 1
+    if b > 15:
+        break
+    print 'while ---'
+print 'end b = ', b
+
+# continue 继续循环
+print '------------- continue 继续循环 ----------------'
+
+d = 30
+while b < d:
+    b = b + 1
+    if b < 25:
+        continue
+    print b
+print 'end b = ', b
+
+# 嵌套for循环
+print '------------- 嵌套for循环 ----------------'
+
+for x in ['A', 'B', 'C']:
+    for y in ['1', '2', '3']:
+        print x + y