从子过程开始时出现EOFError

时间:2018-08-20 10:12:51

标签: python python-3.x subprocess eoferror

当我使用其他脚本中的子进程启动python3脚本时,出现以下错误:

Select the keyword preset you want to use:Traceback (most recent call last):
  File "test2.py", line 9, in <module>
    keywordselect=input("Select the keyword preset you want to use:")
EOFError

但是当我使用python3 generate.py正常启动脚本时,它可以正常工作而没有错误。

脚本1:

import subprocess
p = subprocess.Popen(["python3", "test2.py"])

script2:

print("Keyword")
print("1. Preset1")
print("2. Preset2")
print("3. Preset3")
print("4. Preset4")
print("You can edit the presets in /presets/keywords/.")
selecting = 1
while selecting == 1:
    keywordselect=input("Select the keyword preset you want to use:")
    if keywordselect == "1":
        print("You selected keyword preset 1.")
        selectedkeywordlist = "presets/keywords/preset1.txt"
    elif keywordselect == "2":
        print("You selected keyword preset 2.")
        selectedkeywordlist = "presets/keywords/preset2.txt"
    elif keywordselect == "3":
        print("You selected keyword preset 3.")
        selectedkeywordlist = "presets/keywords/preset3.txt"
    elif keywordselect == "4":
        print("You selected keyword preset 4.")
        selectedkeywordlist = "presets/keywords/preset4.txt"
    else:
        print("You didn't select a valid option, please try again.")

2 个答案:

答案 0 :(得分:1)

您正在使用subprocess.Popen,这是默认情况下的非阻塞代码段,因此您对光标进行编程而不是等待用户的输入。但是,您需要的是阻止程序光标的代码。 subprocess.call确实做到了。它将等待另一个命令完全执行。

您需要使用subprocess.call来解决问题。只需使用此更改您的script2文件

import subprocess
p = subprocess.call(["python", "abca.py"])

您可以在this answer中详细了解subprocess.Popensubprocess.call之间的区别。哪个描述了何时使用哪个命令以及它们之间的区别

答案 1 :(得分:0)

您必须通过stdin的调用来重定向stdoutscript2.py,可以为此使用subporcess.PIPE

p = subprocess.Popen(["python3", "test2.py"], stdin=subprocess.PIPE, 
                     stdout=subprocess.PIPE)