Python-删除文本文件中的最后一个字符

Question

我正在生成一个文件文本，如下所示，我试图在生成后抑制该文件文本的最后一个字符“，”，但我不能...

*Nset, nset
0570, 0571, 0572, 0573, 0574, 0575, 0576, 0577, 0578, 0579, 0579
0580, 0581, 0582, 0583, 0584, 0585, 0586, 0587, 0588, 0589, 0589
0590, 0591, 

我在 Stack 上找到了这种代码，但是，它不起作用......

import sys
with open(sys.argv[1]) as f, open('out.txt', 'w') as out:
     for line in f:
         out.write(line.split()[-1]+'\n')

----稍后编辑----

我的代码生成文件文本:

fichier_write.write("*Nset,")
fichier_write.write("\n")
compt = 0
for i in range(0,node_label.size):
    if Eleme_CI[i]!=0:
        fichier_write.write("%.4i, "%(Eleme_CI[i])),
        compt = compt + 1
    if compt == 10: 
        fichier_write.write("%.4i"%(Eleme_CI[i])),
        fichier_write.write("\n")
        compt = 0

fichier_write.close()  

Answer 1

import re
# get text into a string \Z is the end of a string in regex
with open('data') as f:
    text = f.read()

text = re.sub(r'.\Z',r'',text)

print(text)

Money amount left 39.0
*Nset, nset
0570, 0571, 0572, 0573, 0574, 0575, 0576, 0577, 0578, 0579, 0579
0580, 0581, 0582, 0583, 0584, 0585, 0586, 0587, 0588, 0589, 0589
0590, 0591