小编Naw*_*wal的帖子

我有一个我要按顺序评估的lambda函数列表.我不确定为什么,但只评估最后一个函数.示例如下:

  >>> def f(x,z):
  ...     print "x=",x,", z=",z
  ... 
  >>> 
  >>> g = lambda x : f(x,13)
  >>> g(2)
  x= 2 , z= 13    # As expected
  >>> 
  >>> lst=[]
  >>> 
  >>> for i in range(0,5): 
  ...    lst.append(lambda x: f(x,i))
  ... 
  >>> print lst
  [<function <lambda> at 0x10341e2a8>, <function <lambda> at 0x10341e398>, <function <lambda> at 0x10341e410>, <function <lambda> at 0x10341e488>, <function <lambda> at 0x10341e500>]
  >>> 
  >>> for fn in lst:
  ...   fn(3)
  ... 
  x= 3 , z= 4 # z …

我有一个来自 Tiny C 编译器的 64 位 ELF 目标代码。我无法让 gobjdump 显示反汇编代码。我使用的是 OS X 10.10.5。

$ file hello.o 
hello.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped
$ gobjdump -d hello.o
gobjdump: hello.o: File format not recognized

$ greadelf -h hello.o
ELF Header:
  Magic:   7f 45 4c 46 02 01 01 00 00 00 00 00 00 00 00 00 
  Class:                             ELF64
  Data:                              2's complement, little endian
  Version:                           1 (current)
  OS/ABI:                            UNIX - System V
  ABI Version:                       0
  Type:                              REL …