我编写这个简短的小程序是为了自学 Python 中的面向对象设计。但是我目前遇到了一个非常令人困惑的错误。
Traceback (most recent call last):
File "main.py", line 97, in <module>
cli()
File "C:\Python27\lib\site-packages\click\core.py", line 716, in __call__
return self.main(*args, **kwargs)
File "C:\Python27\lib\site-packages\click\core.py", line 695, in main
with self.make_context(prog_name, args, **extra) as ctx:
File "C:\Python27\lib\site-packages\click\core.py", line 620, in make_context
self.parse_args(ctx, args)
File "C:\Python27\lib\site-packages\click\core.py", line 874, in parse_args
value, args = param.handle_parse_result(ctx, opts, args)
File "C:\Python27\lib\site-packages\click\core.py", line 1390, in handle_parse_result
value = self.full_process_value(ctx, value)
File "C:\Python27\lib\site-packages\click\core.py", line 1675, in full_process_value
return Parameter.full_process_value(self, ctx, value)
File "C:\Python27\lib\site-packages\click\core.py", line 1359, in full_process_value
value = self.process_value(ctx, value)
File "C:\Python27\lib\site-packages\click\core.py", line 1349, in process_value
return self.type_cast_value(ctx, value)
File "C:\Python27\lib\site-packages\click\core.py", line 1332, in type_cast_value
return self.type(value or (), self, ctx)
File "C:\Python27\lib\site-packages\click\types.py", line 38, in __call__
return self.convert(value, param, ctx)
File "C:\Python27\lib\site-packages\click\types.py", line 472, in convert
raise TypeError('It would appear that nargs is set to conflict '
TypeError: It would appear that nargs is set to conflict with the composite type arity.
这个错误是由我的基于点击的 CLI 引发的。这很奇怪，因为引发错误的选项之一没有任何参数。
#-*- coding: utf-8 -*-
import click
import json
import glob
import os
def prompt(question):
val = raw_input(question + ' > ')
return val
def mkdir(path):
if not os.path.isdir(str(path)):
os.mkdir(str(path))
return str(path)
class Profile(object):
def __init__(self, name, age, weight, job, salary):
self.name = name
self.age = age
self.weight = weight
self.job = job
self.salary = salary
self.data = { 'name' : '',
'age' : '',
'weight' : '',
'job': '',
'salary' : ''
}
def new_profile(self, name, age, job, weight, salary, fname):
self.data['name'] = name
self.data['age'] = age
self.data['job'] = job
self.data['weight'] = weight
self.data['salary'] = salary
self.fname = fname
self.dirname = mkdir('.profiles\\')
with open(str(self.dirname) + str(self.fname) + '.json', 'w') as self.profile:
json.dump(self.data, self.profile)
print 'Profile saved!'
def list_profile(self):
print glob.glob('.profiles/*.json')
def print_profile(self, fname):
try:
self.fname = fname
with open('.profiles\\' + str(self.fname) + '.json') as data_file:
self.profile = json.load(data_file)
self.name = self.profile['name']
self.age = self.profile['age']
self.weight = self.profile['weight']
self.job = self.profile['job']
self.salary = self.profile['salary']
print 'name: {}\nage: {}\nweight: {}\noccupation: {}\nsalary: {}'.format(self.name, self.age, self.weight, self.job, self.salary)
except IOError:
print 'File not found'
@click.command(options_metavar='<options>')
@click.option('--new_profile', '-n',
nargs=6,
type=click.Tuple([str, str, str, str, str, str]),
metavar='<name, age, occupation, weight, salary, filename>',
help='Creates a new profile')
@click.option('--list_profile', '-l',
is_flag=True,
help='Lists all profiles that currently exist')
@click.option('--print_profile', '-p',
type=(str),
metavar='<profile name>',
help = 'prints data from a saved profile')
def cli(new_profile, list_profile, print_profile):
profile = Profile('', '', '', '', '')
if new_profile:
profile.new_profile(new_profile[0], new_profile[1], new_profile[2], new_profile[3], new_profile[4], new_profile[5]) # name, age, job, weight, salary, fname
elif list_profile:
profile.list_profile()
elif print_profile:
profile.print_profile(print_profile)
if __name__ == '__main__':
cli()
我一直在努力解决这个回溯大约一天，但没有任何结果。有什么建议么？谢谢！
编辑：我修复了它，但我在这个过程中创建了一个逻辑错误。
default=(None, None, None, None, None, None))
我将此参数添加到单击选项 new_profile 中。但是当您使用任何其他参数时，它只会运行
Profile.new_profile(None, None None, None, None None)
从而创建一个新文件none.json，.profile所有值都为空。所以我想我在技术上解决了这个问题，但我创造了一个更大的问题。