python - 如何自动执行几个相互依赖的 Python 脚本

Question

我正在运行 Ubuntu 14.04 LTS，我有一组 Python 脚本，其中:

• 第一个脚本获取键盘输入，对其进行修改，并将修改后的输出存储在文件中
• 第二个脚本读取第一个脚本生成的输出并获取(额外的)键盘输入，执行操作，并将一些结果存储在第二个文件中
• 等等

为了具体起见，假设我有两个 Python 脚本 1_script.py 和 2_script.py，其源代码如下(在本文末尾)发布)。

我想知道如何在执行以下所有操作的终端中运行单个命令:

1. 执行1_script.py
2. 在 1_script.py 要求键盘输入时提供“hello”
3. 执行 2_script.py
4. 提供'!'当 2_script.py 要求键盘输入时

如果您能就此提出任何建议，我将不胜感激。

1_script.py

"""
This script:
    1) prompts the user to enter a string
    2) performs modifications to the entered string
    3) stores the modified string into a file 
"""

# get user input
user_entry = raw_input('Enter a string: ')

# perform modifications to the input
modified_data = user_entry + '...'

# store the modified input into a file
f = open('output_from_1_script.txt', 'w')
f.write(modified_data)
f.close()

2_script.py

"""
Dependencies:
    1) before executing this script, the script 1_script.py
        has to have been successfully run

This script:
    1) reads the output generated by 1_script.py
    2) modifies the read data with a user-supplied input
    3) prints the modified data to the screen
"""

# reads the output generated by 1_script.py
f = open('output_from_1_script.txt', 'r')
pregenerated_data = f.readline()
f.close()

# modifies the read data with a user-supplied input
user_input = raw_input('Enter an input with which to modify the output generated by 1_script.py: ')
modified_data = pregenerated_data + user_input

print modified_data

Answer 1

创建一个可以存放所有文件的目录您可以使用模块系统或将每个函数包含到同一个文件中进入目录，执行下面定义的mainfile.py

1_script.py

"""
This script:
    1) prompts the user to enter a string
    2) performs modifications to the entered string
    3) stores the modified string into a file 
"""
def get_input():
    # get user input
    user_entry = raw_input('Enter a string: ')

    # perform modifications to the input
    modified_data = user_entry + '...'

    # store the modified input into a file
    f = open('output_from_1_script.txt', 'w')
    f.write(modified_data)
    f.close()

下一个脚本将放在下一个文件中

2_script.py

"""
Dependencies:
    1) before executing this script, the script 1_script.py
        has to have been successfully run

This script:
    1) reads the output generated by 1_script.py
    2) modifies the read data with a user-supplied input
    3) prints the modified data to the screen
"""
def post_input():
    # reads the output generated by 1_script.py
    f = open('output_from_1_script.txt', 'r')
    pregenerated_data = f.readline()
    f.close()

    # modifies the read data with a user-supplied input
    user_input = raw_input('Enter an input with which to modify the output     generated by 1_script.py: ')
    modified_data = pregenerated_data + user_input

    print modified_data

第三个脚本主文件.py

from 1_script import get_input
from 2_script import post_input

if __name__=='__main__':
    get_input()
    post_input()
    print "success"