argparse

Python. Argparser. Removing not-needed arguments

由 安稳与你 提交于 2019-12-07 03:40:14
问题 I am parsing some command-line arguments, and most of them need to be passed to a method, but not all. parser = argparse.ArgumentParser() parser.add_argument("-d", "--dir", help = "Directory name", type = str, default = "backups") parser.add_argument("-n", "--dbname", help = "Name of the database", type = str, default = "dmitrii") parser.add_argument("-p", "--password", help = "Database password", type = str, default = "1123581321") parser.add_argument("-u", "--user", help = "Database

Hiding selected subcommands using argparse

由 强颜欢笑 提交于 2019-12-07 02:59:27
问题 I am using argparse and have set-up subcommands to my program. I have created sub-parsers to define these sub-commands. I have some admin commands that shouldn't be shown to users in the help screen. I know we could hide arguments of a sub-command, but I don't know how we could hide few of the subcommands from showing up in the help list. Here's my code snippet, parser = argparse.ArgumentParser(prog='myProg', description=desc, formatter_class=argparse.RawDescriptionHelpFormatter) subparsers =

How to localize Python's argparse module, without patching it?

由 北慕城南 提交于 2019-12-07 02:12:00
问题 A localized command line application looks strange when some part of the messages are in the user language and some other parts, in English. I don't know if I messed up anything when I installed Python 3 from source, it seems there are no *.mo files, so argparse (among the whole) is not localization aware. The API does not seems to offer a way to localize, neither. Or did I missed it? I could patch argparse.py , but I won't, as I want it to be portable, and I'm not OK with suggesting users to

Ruby optparse Limitations

由 [亡魂溺海] 提交于 2019-12-07 01:16:49
问题 I currently script in Python but I wish to try Ruby for several reasons. I've looked at a lot of sample code and read a lot of documentation over the last week. One point of concern I have is the lack of a proper command line argument parsing libraries in Ruby. Ruby experts, don't get mad at me — maybe I don't know. That's why I am here. In Python, I was used to using argparse which in my opinion is simply perfect (maybe for my needs). Unfortunately though, OptionParser doesn't allow for the

call_command argument is required

由 最后都变了- 提交于 2019-12-07 00:33:40
问题 I'm trying to use Django's call_command in a manner very similar to this question without an answer. The way I'm calling it is: args = [] kwargs = { 'solr_url': 'http://127.0.0.1:8983/solr/collection1', 'type': 'opinions', 'update': True, 'everything': True, 'do_commit': True, 'traceback': True, } call_command('cl_update_index', **kwargs) In theory, that should work, according to the docs. But it doesn't work, it just doesn't. Here's the add_arguments method for my Command class: def add

利用Python开发智能阅卷系统

由 淺唱寂寞╮ 提交于 2019-12-07 00:12:31
随着现代图像处理和人工智能技术的快速发展，不少学者尝试讲CV应用到教学领域，能够代替老师去阅卷，将老师从繁杂劳累的阅卷中解放出来，从而进一步有效的推动教学质量上一个台阶。 传统的人工阅卷，工作繁琐，效率低下，进度难以控制且容易出现试卷遗漏未改、登分失误等现象。 现代的“机器阅卷”，工作便捷、效率高、易操作，只需要一个相机（手机），拍照即可获取成绩，可以导入Excel表格便于存档管理。 下面我们从代码实现的角度来解释一下我们这个简易答题卡识别系统的工作原理。 第一步，导入工具包及一系列的预处理 import numpy as np import argparse import imutils import cv2 # 设置参数 ap = argparse.ArgumentParser() ap.add_argument("-i", "--image", default="test_01.png") args = vars(ap.parse_args()) # 正确答案 ANSWER_KEY = {0: 1, 1: 4, 2: 0, 3: 3, 4: 1} # def order_points(pts): # 一共4个坐标点 rect = np.zeros((4, 2), dtype = "float32") # 按顺序找到对应坐标0,1,2,3分别是 左上，右上，右下，左下 #

利用Python开发智能阅卷系统

由 霸气de小男生 提交于 2019-12-07 00:05:02
随着现代图像处理和人工智能技术的快速发展，不少学者尝试讲CV应用到教学领域，能够代替老师去阅卷，将老师从繁杂劳累的阅卷中解放出来，从而进一步有效的推动教学质量上一个台阶。 传统的人工阅卷，工作繁琐，效率低下，进度难以控制且容易出现试卷遗漏未改、登分失误等现象。 现代的“机器阅卷”，工作便捷、效率高、易操作，只需要一个相机（手机），拍照即可获取成绩，可以导入Excel表格便于存档管理。 下面我们从代码实现的角度来解释一下我们这个简易答题卡识别系统的工作原理。 第一步，导入工具包及一系列的预处理 import numpy as np import argparse import imutils import cv2 # 设置参数 ap = argparse.ArgumentParser() ap.add_argument("-i", "--image", default="test_01.png") args = vars(ap.parse_args()) # 正确答案 ANSWER_KEY = {0: 1, 1: 4, 2: 0, 3: 3, 4: 1} # def order_points(pts): # 一共4个坐标点 rect = np.zeros((4, 2), dtype = "float32") # 按顺序找到对应坐标0,1,2,3分别是 左上，右上，右下，左下 #

What is a namespace object?

由 岁酱吖の 提交于 2019-12-06 18:42:35
问题 import argparse parser = argparse.ArgumentParser(description='sort given numbers') parser.add_argument('-s', nargs = '+', type = int) args = parser.parse_args() print(args) On command line when I run the command python3 file_name.py -s 9 8 76 It prints Namespace(s=[9, 8, 76]) . How can I access the list [9, 8, 76]? What is the namespace object. Where can I learn more about it? 回答1: The documentation for argparse.Namespace can be found here. You can access the s attribute by doing args.s . If

在OpenCV里实现命令行参数输入

由 不羁的心 提交于 2019-12-06 17:35:51
有时候需要提供一个程序给另外一个程序调用，方法有很多，比如使用模块的方式，比如使用库的方式，但也可以采用命令行的方式，这样还可以独立地运行和开发。采用命令行的方式，那么就需要对命令行参数进行识别，这里就来实现相关的参数的识别功能。首先导入库： import argparse 接着创建argparse.ArgumentParser()对象，然后调用add_argument来添加参数，最后parse_args()来分析参数输入。例子演示如下： #python 3.7.4,opencv4.1 #蔡军生 https://blog.csdn.net/caimouse/article/details/51749579 # import argparse import cv2 ap = argparse.ArgumentParser() ap.add_argument("-i", "--image", required = True,help = "Path to the image") args = vars(ap.parse_args()) image = cv2.imread(args["image"]) print("width: {} pixels".format(image.shape[1])) print("height: {} pixels".format(image.shape

argparse arguments nesting

由 六眼飞鱼酱① 提交于 2019-12-06 16:55:46
问题 I have a following code in python: parser = argparse.ArgumentParser(description='Deployment tool') group = parser.add_mutually_exclusive_group() group.add_argument('-a', '--add', dest='name_to_add', help='Add a new group or a role to existing group') group.add_argument('-u', '--upgrade', dest='name_to_upgrade', help='Upgrade a group with the new version') parser.add_argument('--web_port', help='Port of the WEB instance that is being added to the group') My problem is with "--web_port" option.
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