类型错误：必须是字符串，不空字节，而不是str的

Question

我试图运行此代码，运行相同的命令（小变化），每帧我有：

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("../") 

我运行这个我得到这个错误：

---

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 

我搜索互联网，但我不能找到一个很好的答案。

Answer 1

的问题是与应该要么双逃过\炭，即改变为“\\” 或可替代地添加一个“R”的字符串decleration之前：

pml_cmd = R“PyMOL的UREI％S .PDB ......”

因为某处沿串有一个\ 0，这被解释为NULL字符的时候得到这个特殊的错误

Answer 2

我能够通过注释掉print解决此错误：

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

我本来可以做print(tarfileobj.split)或打印repr或删除\0空字节，或者如果它的tarfile，只是提取它。