Python argparse布尔问题

Question

我无法设置布尔值。我的代码是：

training_pages_list_file = ''
html_page_dir = ''
clf_file_str = ''
user_idf_param = False

if __name__ == "__main__":
    parser = argparse.ArgumentParser(description='Classify some CraigsList Pages')
    parser.add_argument('csv_file', action='store')
    parser.add_argument('file_dir', action='store')
    parser.add_argument('clf_file', action='store')
    parser.add_argument('-i', action='store_true', help="include idf", dest=user_idf_param, default=False)
    args = parser.parse_args()

但是，这会引发：

hon3.4/argparse.py", line 1721, in parse_args
    args, argv = self.parse_known_args(args, namespace)
  File "/usr/local/Cellar/python3/3.4.2_1/Frameworks/Python.framework/Versions/3.4/lib/python3.4/argparse.py", line 1742, in parse_known_args
    if not hasattr(namespace, action.dest):
TypeError: hasattr(): attribute name must be string

如果包含-i，我怎样才能拥有它，它会将user_idf_param 设置为True？

Answer 1

看起来user_idf_param 应该是告诉您是否使用它的属性的名称。

import argparse

training_pages_list_file = ''
html_page_dir = ''
clf_file_str = ''
user_idf_param = "i_param_used"

if __name__ == "__main__":
    parser = argparse.ArgumentParser(description='Classify some CraigsList Pages')
    parser.add_argument('csv_file', action='store')
    parser.add_argument('file_dir', action='store')
    parser.add_argument('clf_file', action='store')
    parser.add_argument('-i', action='store_true', help="include idf", dest=user_idf_param, default=False)

    args = parser.parse_args((...))

    if args.i_param_used:
        ...