量化投资-以 Python 为工具.pdf

量化投资：以 Python 为工具 蔡立耑 第一部分 基础 1 第一章 略。 2 第二章 Python 代码的编写与执行 1. 1 1 In [1] :%paste 2 for i in range (1,11) 3 i f i%2 == 1 4 print ( i ) 5 6 ## End pasted text 7 1 8 3 9 5 10 7 11 9 1在代码文件中复制代码，然后在 ipython 中输入%paste，并按enter 键，即可执行代码并输出结果。 3 第三章 Python 对象类型初探 1. 1 In [1] type ((1,3,5,7)) 2 Out[1] tuple 3 4 In [2] type (’pi’) 5 Out[2] str 6 7 In [3] type (5>6) 8 Out[3] bool 9 10 In [4] type ({’High’:7.45,’Low’:7.30}) 11 Out[4] dict 12 13 In [5] type ([’Hello world ’ ,3,4,(’a’,’b’) ,True]) 14 Out[5] l i s t 2. 1 In [1] :(3+4j )*(4+3j ) 2 Out[1] :25j 3 4 In [2] :3/4 5 Out[2] :0.75 6 7 In [3] :True *3 8 Out[3] :3 9 10 In [4] :0.0030.0022222 11 Out[4] :0.0007777999999999999 3. 1 In [1] :a = [1, 2, 3] 2 4 第三章 PYTHON 对象类型初探 5 3 In [2] :b=a 4 5 In [3] :b 6 Out[3] :[1, 2, 3] 7 8 In [4] id (a)==id (b) 9 Out[4] :True 10 11 In [5] :b[0]=3 12 13 In [6] :a 14 Out[6] :[3, 2, 3] 15 16 In [7] id (a)==id (b) 17 Out[7] :True 4. (a) 1 In [1] :a=tuple (range (1,11))