Python 将表转换为字典

Question

问题：命令生成一个表，这使得编写脚本变得非常困难。

解决方案：将表转换为Python字典以提高使用效率。这些表可以有 1 - 20 个不同的虚拟驱动器，并且可能无法设置“名称”等属性。

示例表：

Virtual Drives = 4

VD LIST :
=======

----------------------------------------------------------
DG/VD TYPE   State Access Consist Cache sCC     Size Name
----------------------------------------------------------
0/0   RAID1  Optl  RW     No      RWTD  -   1.818 TB one
1/1   RAID1  Optl  RW     No      RWTD  -   1.818 TB two
2/2   RAID1  Optl  RW     No      RWTD  -   1.818 TB three
3/3   RAID1  Optl  RW     No      RWTD  -   1.818 TB four
4/4   RAID10 Reblg RW     No      RWTD  -   4.681 TB 
----------------------------------------------------------

字典示例：

{"DG/VD":"0/0", "TYPE":"RAID1", "State":"Optl", "Access":"RW", "Consist":"No", "Cache":"RWTD", "sCC":"-", "Size":"1.818 TB", "Name":"one"}
{"DG/VD":"4/4", "TYPE":"RAID10", "State":"Reblg", "Access":"RW", "Consist":"No", "Cache":"RWTD", "sCC":"-", "Size":"4.681 TB", "Name":""}

总共有四个字典，每个虚拟驱动器一个。如何最好地解决这个问题？

我有一些想法。首先，搜索表头并按空格分割以定义列表。其次，搜索带有“数字/数字”的虚拟驱动器并按空格分割以定义第二个列表。但是，“大小”需要特殊，因为它需要忽略数字和“TB”之间的空格。

接下来，将两个列表压缩在一起以生成字典。有人有更好的想法来处理这个文本吗？

# Create a list of all the headers in the virtual disk table
get_table_header = " /c0/vall show | awk '/^DG\/VD/'"
table_header_values = console_info(utility + get_table_header).split()

['DG/VD', 'TYPE', 'State', 'Access', 'Consist', 'Cache', 'sCC', 'Size', 'Name']

# Create a list of all virtual drives
get_virtual_drives = " /c0/vall show | awk '/^[0-9]\/[0-9]/'"
virtual_drive_values = console_info(utility + get_virtual_drives).split()

["0/0", "RAID1", "Optl", "RW", "No", "RWTD", "-", "1.818", "TB", "0"]

Answer 1

from itertools import dropwhile, takewhile
with open("test.txt") as f:
    dp = dropwhile(lambda x: not x.startswith("-"), f)
    next(dp)  # skip ----
    names = next(dp).split()  # get headers names
    next(f)  # skip -----
    out = []
    for line in takewhile(lambda x: not x.startswith("-"), f):
        a, b = line.rsplit(None, 1)
        out.append(dict(zip(names, a.split(None, 7) + [b])))]

输出：

from pprint import  pprint as pp

pp(out)
[{'Access': 'RW',
  'Cache': 'RWTD',
  'Consist': 'No',
  'DG/VD': '0/0',
  'Name': 'one',
  'Size': '1.818 TB',
  'State': 'Optl',
  'TYPE': 'RAID1',
  'sCC': '-'},
 {'Access': 'RW',
  'Cache': 'RWTD',
  'Consist': 'No',
  'DG/VD': '1/1',
  'Name': 'two',
  'Size': '1.818 TB',
  'State': 'Optl',
  'TYPE': 'RAID1',
  'sCC': '-'},
 {'Access': 'RW',
  'Cache': 'RWTD',
  'Consist': 'No',
  'DG/VD': '2/2',
  'Name': 'three',
  'Size': '1.818 TB',
  'State': 'Optl',
  'TYPE': 'RAID1',
  'sCC': '-'},
 {'Access': 'RW',
  'Cache': 'RWTD',
  'Consist': 'No',
  'DG/VD': '3/3',
  'Name': 'four',
  'Size': '1.818 TB',
  'State': 'Optl',
  'TYPE': 'RAID1',
  'sCC': '-'}]

如果你想维持顺序，请使用 OrderedDict

out = [OrderedDict(zip(names, line.split()))
           for line in takewhile(lambda x: not x.startswith("-"), f)]

对于根据您的编辑缺少的名称值：

from itertools import dropwhile, takewhile

with open("test.txt") as f:
    dp = dropwhile(lambda x: not x.startswith("-"), f)
    next(dp)  # skip ----
    names = next(dp).split()  # get headers names
    next(f)  # skip -----
    out = []
    for line in takewhile(lambda x: not x.startswith("-"), f):
        a, b = line.rsplit(" ", 1)
        out.append(dict(zip(names,  a.rstrip().split(None, 7) + [b.rstrip()])))

输出：

[{'Access': 'RW',
  'Cache': 'RWTD',
  'Consist': 'No',
  'DG/VD': '0/0',
  'Name': 'one',
  'Size': '1.818 TB',
  'State': 'Optl',
  'TYPE': 'RAID1',
  'sCC': '-'},
 {'Access': 'RW',
  'Cache': 'RWTD',
  'Consist': 'No',
  'DG/VD': '1/1',
  'Name': 'two',
  'Size': '1.818 TB',
  'State': 'Optl',
  'TYPE': 'RAID1',
  'sCC': '-'},
 {'Access': 'RW',
  'Cache': 'RWTD',
  'Consist': 'No',
  'DG/VD': '2/2',
  'Name': 'three',
  'Size': '1.818 TB',
  'State': 'Optl',
  'TYPE': 'RAID1',
  'sCC': '-'},
 {'Access': 'RW',
  'Cache': 'RWTD',
  'Consist': 'No',
  'DG/VD': '3/3',
  'Name': 'four',
  'Size': '1.818 TB',
  'State': 'Optl',
  'TYPE': 'RAID1',
  'sCC': '-'},
 {'Access': 'RW',
  'Cache': 'RWTD',
  'Consist': 'No',
  'DG/VD': '4/4',
  'Name': '',
  'Size': '4.681 TB',
  'State': 'Reblg',
  'TYPE': 'RAID10',
  'sCC': '-'}]

它还将处理 TB 和名称列值之间有多个空格的行1.818 TB one