add lots file of APUE

Zim/Programme/python/python笔记/dict.txt

@@ -0,0 +1,40 @@
+Content-Type: text/x-zim-wiki
+Wiki-Format: zim 0.4
+Creation-Date: 2012-10-04T13:21:05+08:00
+
+====== dict ======
+Created Thursday 04 October 2012
+
+Help on class dict in module __builtin__:
+
+class dict(object)
+ |  dict() -> new empty dictionary
+ |  dict(mapping) -> new dictionary initialized from **a mapping object**'s   #mapping为__一个__pairs对象
+ |      (key, value) pairs
+ |  dict(iterable) -> new dictionary initialized as if via:
+ |      d = {}
+ |      for **k, v** in iterable:    #迭代器对象每次返回的元素必须是一个容器类型，__容器中元素的个数为2__.**如[a,b], "ab",(a,b)**
+ |          d[k] = v
+ |  dict(__**kwargs)__ -> new dictionary initialized with the name=value pairs
+ |      in the keyword argument list.  For example:  dict(one=1, two=2)
+ |  
+ |  Methods defined here:
+
+
+>>> dict(__[('sape', 4139), ('guido', 4127), ('jack', 4098)]__)
+{'sape': 4139, 'jack': 4098, 'guido': 4127}
+
+>>> dict([(x, x**2) for x in (2, 4, 6)])     # use a list comprehension
+{2: 4, 4: 16, 6: 36}
+
+>>> dict(sape=4139, guido=4127, jack=4098)
+{'sape': 4139, 'jack': 4098, 'guido': 4127}
+tel = {'jack': 4098, 'sape': 4139}
+
+>>> dc=dict(["df","12"]);dc   #["df","12"]为一科迭代对象，每次返回的元素为两个字符的str，所以可以被unpack给key,value
+{'1': '2', 'd': 'f'}
+>>> dc=dict(["df",__"123"__]);dc
+Traceback (most recent call last):
+  File "<stdin>", line 1, in <module>
+ValueError: dictionary update sequence element __#1 has length 3; 2 is required__
+>>> 

Zim/Programme/python/python笔记/float.txt

@@ -0,0 +1,20 @@
+Content-Type: text/x-zim-wiki
+Wiki-Format: zim 0.4
+Creation-Date: 2012-10-04T13:20:56+08:00
+
+====== float ======
+Created Thursday 04 October 2012
+
+>>> float("0xff")
+Traceback (most recent call last):
+  File "<stdin>", line 1, in <module>
+ValueError: invalid literal for float(): 0xff
+>>> 
+
+>>> __float.fromhex("0xfff")__
+4095.0
+>>> 
+
+>>> float("0.111")
+0.111
+>>> 

Zim/Programme/python/python笔记/int_long.txt

@@ -0,0 +1,37 @@
+Content-Type: text/x-zim-wiki
+Wiki-Format: zim 0.4
+Creation-Date: 2012-10-04T13:20:52+08:00
+
+====== int long ======
+Created Thursday 04 October 2012
+
+>>> 1&2  #按__位与__
+0
+
+>>> 0xff&0xf1  #按位与
+241
+>>> 0xff&0xf0
+240
+>>> __hex__(0xff&0xf0)  #返回的__字符串__
+'0xf0'   
+__与hex()类似, bin(), oct()等返回的都是int或long型的字符串代表__
+
+>>> 1&&2   __#python没有&&, ||, !逻辑运算符，但是有and, or, not，而且这三个逻辑运算符返回的是最后一个元素的内容__
+  File "<stdin>", line 1
+    1&&2
+      ^
+SyntaxError: invalid syntax
+
+>>> 1 and 2  __#返回的是最后一个元素的内容而不是True或False，这里为2__
+2
+
+>>> 'fff' & 'dfad'  __#str类型没有定义__and__方法，所以没有位运算__
+Traceback (most recent call last):
+  File "<stdin>", line 1, in <module>
+TypeError: unsupported operand type(s) for &: 'str' and 'str'
+>>> help(str)
+
+>>> 'fff' and 'dfad'
+'dfad'
+>>> 
+

Zim/Programme/python/python笔记/list.txt

@@ -0,0 +1,25 @@
+Content-Type: text/x-zim-wiki
+Wiki-Format: zim 0.4
+Creation-Date: 2012-10-04T13:21:01+08:00
+
+====== list ======
+Created Thursday 04 October 2012
+
+>>> l=range(1,10)
+>>> l
+[1, 2, 3, 4, 5, 6, 7, 8, 9]
+>>> __l[1:8:-1]__
+[]
+>>> l[8:1:-1]
+[9, 8, 7, 6, 5, 4, 3]
+>>> __l[::-1]__
+[9, 8, 7, 6, 5, 4, 3, 2, 1]
+>>> l[-1::-1]
+[9, 8, 7, 6, 5, 4, 3, 2, 1]
+>>> __l[-1:-9:-1]__
+[9, 8, 7, 6, 5, 4, 3, 2]
+>>> l[:]
+[1, 2, 3, 4, 5, 6, 7, 8, 9]
+>>> l[::]
+[1, 2, 3, 4, 5, 6, 7, 8, 9]
+

Zim/Programme/python/python笔记/set.txt

@@ -0,0 +1,18 @@
+Content-Type: text/x-zim-wiki
+Wiki-Format: zim 0.4
+Creation-Date: 2012-10-04T13:21:08+08:00
+
+====== set ======
+Created Thursday 04 October 2012
+
+>>> set1=set(1,2,3)
+Traceback (most recent call last):
+  File "<stdin>", line 1, in <module>
+TypeError: set expected __at most 1 arguments,__ got 3
+
+>>> set1=set((1,2,3))
+>>> set1
+set([1, 2, 3])
+>>> 
+
+

Zim/Programme/python/python笔记/str.txt

@@ -0,0 +1,40 @@
+Content-Type: text/x-zim-wiki
+Wiki-Format: zim 0.4
+Creation-Date: 2012-10-04T13:20:41+08:00
+
+====== str ======
+Created Thursday 04 October 2012
+
+ |  join(...)
+ |      S.join(iterable) -> string
+ |      
+ |      Return a string which is the concatenation of __the strings in the__
+__ |      iterable__.  The separator between elements is S.
+
+iterable迭代器对象每次返回的__必须是字符串对象__。
+
+>>> ":".join("abcd")
+'a:b:c:d'
+
+>>> ":".join(['a','b','c','d'])
+'a:b:c:d'
+
+>>> ":".join(['a',__123__,'c'])
+Traceback (most recent call last):
+  File "<stdin>", line 1, in <module>
+TypeError: sequence item 1: __expected string__, int found
+
+>>> ":".join(['a',['ab'],'c'])
+Traceback (most recent call last):
+  File "<stdin>", line 1, in <module>
+TypeError: sequence item 1: expected string, list found
+>>> 
+
+ |  rsplit(...)
+ |      S.rsplit([sep [,maxsplit]]) -> list of strings
+ |      
+ |      Return a list of the words in the string S, using sep as the
+ |      delimiter string, starting at the end of the string and working
+ |      to the front.  If maxsplit is given, at most maxsplit splits are
+ |      done. If sep is not specified or is __None__, any whitespace string
+ |      is a separator.

Zim/Programme/python/python笔记/unpack.txt

@@ -0,0 +1,38 @@
+Content-Type: text/x-zim-wiki
+Wiki-Format: zim 0.4
+Creation-Date: 2012-10-04T13:47:32+08:00
+
+====== unpack ======
+Created Thursday 04 October 2012
+
+>>> for k,v in ["fdf",23,"dfdf",33]:
+...   print k,v
+... 
+Traceback (most recent call last):
+  File "<stdin>", line 1, in <module>
+ValueError: __too many__ values to unpack
+
+顺序容器类型如str, list, tuple__每次迭代时只能返回其中的一个元素__。
+所以第一次返回循环返回**"fdf"**，但是它有三个元素最多只能赋值给两个
+变量。
+
+>>> for k,v in "dfdf":
+...   print k,v
+... 
+Traceback (most recent call last):
+  File "<stdin>", line 1, in <module>
+ValueError: __need more than 1 value__ to unpack
+
+字符串迭代时，每次返回其中的一个字符。所以最多只能unpack给一个变量。
+
+>>> k,v="dfdf"
+Traceback (most recent call last):
+  File "<stdin>", line 1, in <module>
+ValueError: __too many values to unpack__
+
+unpack一个顺序容器类型时，左边变量的数目必须要与容器中元素的个数相同。
+
+>>> k,v="df"
+>>> print k,v
+d f
+>>> 

Zim/Programme/python/python笔记/内置函数.txt

@@ -0,0 +1,7 @@
+Content-Type: text/x-zim-wiki
+Wiki-Format: zim 0.4
+Creation-Date: 2012-10-04T13:21:30+08:00
+
+====== 内置函数 ======
+Created Thursday 04 October 2012
+