mac上python子进程中的pdflatex

我试图在Python 2.4.4中的.tex文件上运行pdflatex。子进程(在mac上):

import subprocess
subprocess.Popen(["pdflatex", "fullpathtotexfile"], shell=True)

实际上什么也做不了。但是,我可以在终端中运行“pdflatex fullpathtotexfile”而不出现问题,生成一个pdf文件。我错过了什么?

[编辑] 正如其中一个答案所暗示的,我试着:

return_value = subprocess.call(['pdflatex', '/Users/Benjamin/Desktop/directory/ON.tex'], shell =False)

失败的原因是:

Traceback (most recent call last):
  File "/Users/Benjamin/Desktop/directory/generate_tex_files_v3.py", line 285, in -toplevel-
    return_value = subprocess.call(['pdflatex', '/Users/Benjamin/Desktop/directory/ON.tex'], shell =False)
  File "/Library/Frameworks/Python.framework/Versions/2.4//lib/python2.4/subprocess.py", line 413, in call
    return Popen(*args, **kwargs).wait()
  File "/Library/Frameworks/Python.framework/Versions/2.4//lib/python2.4/subprocess.py", line 543, in __init__
    errread, errwrite)
  File "/Library/Frameworks/Python.framework/Versions/2.4//lib/python2.4/subprocess.py", line 975, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory

文件确实存在,我可以运行。 pdflatex /Users/Benjamin/Desktop/directory/ON.tex 在终点站。请注意,pdflatex确实抛出了大量警告。。。但这不重要,这也会产生同样的错误:

return_value = subprocess.call(['pdflatex', '-interaction=batchmode', '/Users/Benjamin/Desktop/directory/ON.tex'], shell =False)