TypeError：必須是不包含空字節的字符串，而不是str

Question

我正在嘗試運行此代碼，以便在我擁有的每個幀中運行相同的命令（幾乎沒有變化）：

traj.reset()
import os
#os.chdir(outname)
for i, frame in enumerate(traj):
    frame.superpose()
    comando = "python hollow.py -c constraint -o hollow_%s.pdb urei%s.pdb" % (i, i)
    os.system(comando)
    pml_cmd = "pymol urei%s.pdb hollow_%s.pdb -c -d 'as cartoon, urei%s;color gray90, urei%s;center chain A;set_view (\-0.605158150,0.089404292,0.791067421,\0.795849979,0.093013920,0.598304033,\-0.020089993,0.991641700,-0.127439827,\0.000000000,0.000000000,-202.017959595,\-28.771762848,-7.683309555,10.745590210,\-568.485290527,972.520690918,-20.000000000);bg white;as sphere, hollow_%s;color cyan, hollow_%s;ray;save urei%s.png' " % (i, i, i, i, i, i, i)
    os.system(pml_cmd)
    #remove = "rm urei%s.pdb hollow_%s.pdb" % (i, i)
    #os.system(remove)
os.chdir("../")

我運行這個，我得到這個錯誤：

---

TypeError                                 Traceback (most recent call last)
<ipython-input-8-53cd3e7bd107> in <module>()
      7     os.system(comando)
          8     pml_cmd = "pymol urei%s.pdb hollow_%s.pdb -c -d 'as cartoon, urei%s;color gray90, urei%s;center chain A;set_view (\-0.605158150,0.089404292,0.791067421,\0.795849979,0.093013920,0.598304033,\-0.020089993,0.991641700,-0.127439827,\0.000000000,0.000000000,-202.017959595,\-28.771762848,-7.683309555,10.745590210,\-568.485290527,972.520690918,-20.000000000);bg white;as sphere, hollow_%s;color cyan, hollow_%s;ray;save urei%s.png' " % (i, i, i, i, i, i, i)
----> 9     os.system(pml_cmd)
     10     #remove = "rm urei%s.pdb hollow_%s.pdb" % (i, i)
     11     #os.system(remove)

TypeError: must be string without null bytes, not str

我在互聯網上搜索，但找不到很好的答案。

Answer 1

問題在於\\ char應該被兩次轉義，即更改為“ \\\\”，或者在字符串解串之前添加“ r”：

pml_cmd = r“ pymol urei％s.pdb ...”

您會收到此特定錯誤，因為在字符串的某處有一個\\ 0，它被解釋為NULL字符

Answer 2

我可以通過注釋掉print來解決此錯誤：

for tarfileobj in inputs:
    # print(tarfileobj)
    tarfileobj.extractall(path=t, members=None)

我可以完成print(tarfileobj.split)或打印repr或刪除\\0空字節，或者如果它是tarfile，只需將其解壓縮即可。