PYTHON:读取文本文件不适用于定界符

Question

我有一个从 gem5 输出的文本文件(即，我无法控制它的格式)。

是这样的:

    ---------- Begin Simulation Statistics ----------
sim_seconds                                  9.553482                       # Number of seconds simulated
sim_ticks                                9553481748000                       # Number of ticks simulated
final_tick                               9553481748000                       # Number of ticks from beginning of simulation (restored from checkpoints and never reset)
sim_freq                                 1000000000000                       # Frequency of simulated ticks
host_inst_rate                                 911680                       # Simulator instruction rate (inst/s)
host_op_rate                                  1823361                       # Simulator op (including micro ops) rate (op/s)
host_tick_rate                             1669871119                       # Simulator tick rate (ticks/s)
host_mem_usage                                 662856                       # Number of bytes of host memory used
host_seconds                                  5721.09                       # Real time elapsed on the host
sim_insts                                  5215804132                       # Number of instructions simulated
sim_ops                                   10431608523                       # Number of ops (including micro ops) simulated

使用 csv 模块时，我遇到了空格分隔行的问题。如果我用空格分隔，所有空格都会被读入，如果我用\t 分隔，它根本不会确认任何内容。

我怎样才能轻松处理这些空格，因为我只想在左栏中阅读以及赋予它的值。

csv import 是否仍然适用，还是有更强大的东西？

Answer 1

使用 re.split 拆分:

import re

d = """    ---------- Begin Simulation Statistics ----------
sim_seconds                                  9.553482                       # Number of seconds simulated
sim_ticks                                9553481748000                       # Number of ticks simulated
final_tick                               9553481748000                       # Number of ticks from beginning of simulation (restored from checkpoints and never reset)
sim_freq                                 1000000000000                       # Frequency of simulated ticks
host_inst_rate                                 911680                       # Simulator instruction rate (inst/s)
host_op_rate                                  1823361                       # Simulator op (including micro ops) rate (op/s)
host_tick_rate                             1669871119                       # Simulator tick rate (ticks/s)
host_mem_usage                                 662856                       # Number of bytes of host memory used
host_seconds                                  5721.09                       # Real time elapsed on the host
sim_insts                                  5215804132                       # Number of instructions simulated
sim_ops                                   10431608523                       # Number of ops (including micro ops) simulated"""

# Skip first line
for line in d.split("\n")[1:]:
    # Columns are separated by runs of spaces. Only get three parts.
    parts = re.split(r'\s+', line, 3)
    # Only print the first two columns.
    print(parts[:2])

输出:

['sim_seconds', '9.553482']
['sim_ticks', '9553481748000']
['final_tick', '9553481748000']
['sim_freq', '1000000000000']
['host_inst_rate', '911680']
['host_op_rate', '1823361']
['host_tick_rate', '1669871119']
['host_mem_usage', '662856']
['host_seconds', '5721.09']
['sim_insts', '5215804132']
['sim_ops', '10431608523']