Question

我有一个这种格式的文件：

    ELEM MAT TYP REL ESY SEC        NODES
       1   1   1   1   0   1      611    2856     618    2582   94075   94107   94065   94068
                               101071   94104
       2   1   1   1   0   1      598    2856     618     611   93995   94107   93992   93991
                                94075   94065

    ELEM MAT TYP REL ESY SEC        NODES

   37561  29  29   1   0  29    32186   32642   32666   32210   32187   32643   32667   32211
                               191297  192707  191370  191296  191300  192710  191373  191299
                               191295  192706  192779  191368
   37562  29  29   1   0  29    32187   32643   32667   32211   32188   32644   32668   32212
                               191300  192710  191373  191299  191303  192713  191376  191302
                               191298  192709  192782  191371
   37563  29  29   1   0  29    32188   32644   32668   32212   32189   32645   32669   32213
                               191303  192713  191376  191302  191305  192715  191378  191304
                               191301  192712  192785  191374

我需要的是：

       1   1   1   1   0   1      611    2856     618    2582   94075   94107   94065   94068   101071   94104
       2   1   1   1   0   1      598    2856     618     611   93995   94107   93992   93991   94075   94065
   37561  29  29   1   0  29    32186   32642   32666   32210   32187   32643   32667   32211   191297  192707  191370  191296  191300  192710  191373  191299   191295  192706  192779  191368
   37562  29  29   1   0  29    32187   32643   32667   32211   32188   32644   32668   32212   191300  192710  191373  191299  191303  192713  191376  191302   191298  192709  192782  191371
   37563  29  29   1   0  29    32188   32644   32668   32212   32189   32645   32669   32213   191303  192713  191376  191302  191305  192715  191378  191304   191301  192712  192785  191374

我需要删除文本并将其余信息写入在线。通过使用excel进行后处理也可以删除文本。最大的问题是以行的形式写入数据，但有些数据用两行写入，另外一些用三行写入。这些文件包含有限元模型的元素编号和节点编号。我需要在每个元素之后写入节点。任何帮助表示赞赏。

Answer 1

import re

with open('untitled.txt') as f:
    # untitled.txt contains the input text.
    last_line = []
    for line in f:
        m = re.match('ELEM', line)
        if m:
            # if line has header, ignore and continue
            continue
        current_numbers = re.findall(r'\d+', line)
        m = re.match('^\s{20,30}', line)
        if m:
            # if line starts with a lot of spaces add values to previous line
            last_line.extend(current_numbers)
        else:
            if last_line:
                # if we have a previous line print it/ write it to file.
                print(last_line)
            # assign new line found as last line and continue with the loop
            last_line = current_numbers

if last_line:
    print(last_line)

输出：

['1', '1', '1', '1', '0', '1', '611', '2856', '618', '2582', '94075', '94107', '94065', '94068', '101071', '94104']
['2', '1', '1', '1', '0', '1', '598', '2856', '618', '611', '93995', '94107', '93992', '93991', '94075', '94065']
['37561', '29', '29', '1', '0', '29', '32186', '32642', '32666', '32210', '32187', '32643', '32667', '32211', '191297', '192707', '191370', '191296', '191300', '192710', '191373', '191299', '191295', '192706', '192779', '191368']
['37562', '29', '29', '1', '0', '29', '32187', '32643', '32667', '32211', '32188', '32644', '32668', '32212', '191300', '192710', '191373', '191299', '191303', '192713', '191376', '191302', '191298', '192709', '192782', '191371']
['37563', '29', '29', '1', '0', '29', '32188', '32644', '32668', '32212', '32189', '32645', '32669', '32213', '191303', '192713', '191376', '191302', '191305', '192715', '191378', '191304', '191301', '192712', '192785', '191374']

PS：你可以选择任何格式来编写它，这取决于你。

Answer 2

首先，基础知识：

data_out=open(filename,"r")
data_in=open(filename+"_output.txt","w")

for line in data_out:
    written=False
    if [...]

如果它是一个＆＃34;核心线＆＃34;那么你可以选择一个序列来使代码识别出来。（如1 1 1 1 0 1 611 2856 618 2582 94075 94107 94065 94068）或紧随其后的一条线（94075 94065）。您可以通过REL / ESY参数检查它，例如boolean-ish。宿醉线不包含这样的东西。如果一行包含＆＃34; 0＆＃34;或＆＃34; 1＆＃34;你可以将它保存为变量。只要没有新的核心线，就可以追加以下几行。

将其打印到新文档

data_in.write(line)

别忘了

data_in.close()
data_out.close()

读取行并在python中以另一种格式写入它们

2 个答案: