update

Author: crazy1235

day5/__init__.py

@@ -118,3 +118,16 @@ def average(*args):
 print average()
 print average(1, 2, 3, 4)
 print average(12, 34)
+
+
+# 练习题目
+def extendList(val, list=[]):
+    list.append(val)
+    return list
+
+list1 = extendList(10)
+list2 = extendList(123, [])
+list3 = extendList('a')
+print "list1 = %s" % list1
+print "list2 = %s" % list2
+print "list3 = %s" % list3

day8/__init__.py

@@ -0,0 +1,55 @@
+# -*- coding: utf-8 -*-
+
+# 列表
+print '------------- 生成列表 ----------------'
+
+print range(1, 10)
+
+l = []
+for x in range(1, 11):
+    l.append(x * x)
+
+print l
+
+print '------------- 列表生成式 ----------------'
+
+print [x * x for x in range(1, 11)]
+
+# 使用列表生成式生成列表 [1x2, 3x4, 5x6, 7x8, ..., 99x100]
+print [x * (x + 1) for x in range(1, 101, 2)]
+
+print '------------- 复杂表达式 ----------------'
+
+d = {'Adam': 95, 'Lisa': 85, 'Bart': 59}
+tds = ['<tr><td>%s</td><td>%s</td></tr>' % (name, score) for name, score in d.iteritems()]
+print '<table>'
+print '<tr><th>Name</th><th>Score</th><tr>'
+print '\n'.join(tds)
+print '</table>'
+
+# 字符串可以通过%进行格式化，用指定的参数代替%s。
+
+print '------------- 条件过滤 ----------------'
+
+# 列表生成式的for循环后面可以加上if判断
+print [x * x for x in range(1, 20) if x % 3 == 0]
+
+
+# 练习题目
+# 写一个函数，接受一个list，然后把list中的所有字符串变大写后返回，非字符串元素将被忽略
+
+def upperList(L):
+    return [x.upper() for x in L if isinstance(x, str)]
+
+
+print upperList(['Hello', 'world', 101])
+
+print '------------- 多层表达式 ----------------'
+
+print [m + n for m in 'ABC' for n in '123']
+
+result = [a * 100 + b * 10 + c for a in range(1, 10) for b in range(0, 10) for c in range(0, 10) if a == c]
+print len(result), result
+
+result = [a for a in range(100, 1000) if a % 10 == a / 100]
+print len(result), result