如何在Python3 Click应用程序中遍历shell提供的文件列表?
我正在编写一个带有库(几乎还没有使用它的经验)和Python 3.6的控制台应用程序 我需要一个程序,可以从操作系统外壳中这样调用:如何在Python3 Click应用程序中遍历shell提供的文件列表?,python,command-line-interface,python-3.6,python-click,Python,Command Line Interface,Python 3.6,Python Click,我正在编写一个带有库(几乎还没有使用它的经验)和Python 3.6的控制台应用程序 我需要一个程序,可以从操作系统外壳中这样调用: myapp --myoptiona=123 --myoptionb=456 * 遍历当前目录(或掩码指定的任何文件)中所有文件的列表,并对它们进行处理 如何通过单击实现这一点?如果需要接受数量可变的文件参数,可以使用单击参数使用
myapp --myoptiona=123 --myoptionb=456 *
遍历当前目录(或掩码指定的任何文件)中所有文件的列表,并对它们进行处理
如何通过单击实现这一点?如果需要接受数量可变的文件参数,可以使用
单击参数使用
,生成如下命令:
代码:
测试代码:
结果:
@click.command()
@click.option('--myoptiona')
@click.option('--myoptionb')
@click.argument('files', nargs=-1)
def cli(myoptiona, myoptionb, files):
"""The Great CLI APP"""
filenames = []
for filename in files:
# if our shell does not do filename globbing
expanded = list(glob(filename))
if len(expanded) == 0 and '*' not in filename:
raise(click.BadParameter('{}: file not found'.format(filename)))
filenames.extend(expanded)
click.echo('myoptiona: %s' % myoptiona)
click.echo('myoptionb: %s' % myoptionb)
for name in filenames:
click.echo('a file: %s' % name)
import click
from glob import glob
@click.command()
@click.option('--myoptiona')
@click.option('--myoptionb')
@click.argument('files', nargs=-1)
def cli(myoptiona, myoptionb, files):
"""The Great CLI APP"""
filenames = []
for filename in files:
expanded = list(glob(filename))
if len(expanded) == 0 and '*' not in filename:
raise(click.BadParameter(
"file '{}' not found".format(filename)))
filenames.extend(expanded)
click.echo('myoptiona: %s' % myoptiona)
click.echo('myoptionb: %s' % myoptionb)
for name in filenames:
click.echo('a file: %s' % name)
if __name__ == "__main__":
commands = (
'--myoptiona 3 --myoptionb 4',
'--myoptiona 3 file1 file2',
'--myoptiona 3 --myoptionb 4 file1 file4',
'file1 file2 file3',
'file*',
'--help',
)
import sys, time
time.sleep(1)
print('Click Version: {}'.format(click.__version__))
print('Python Version: {}'.format(sys.version))
for cmd in commands:
try:
time.sleep(0.1)
print('-----------')
print('> ' + cmd)
time.sleep(0.1)
cli(cmd.split())
except BaseException as exc:
if str(exc) != '0' and \
not isinstance(exc, (click.ClickException, SystemExit)):
raise
Click Version: 6.7
Python Version: 3.6.3 (v3.6.3:2c5fed8, Oct 3 2017, 18:11:49) [MSC v.1900 64 bit (AMD64)]
-----------
> --myoptiona 3 --myoptionb 4
myoptiona: 3
myoptionb: 4
-----------
> --myoptiona 3 file1 file2
myoptiona: 3
myoptionb: None
a file: file1
a file: file2
-----------
> --myoptiona 3 --myoptionb 4 file1 file4
Usage: test.py [OPTIONS] [FILES]...
Error: Invalid value: 'file4': file not found
-----------
> file1 file2 file3
myoptiona: None
myoptionb: None
a file: file1
a file: file2
a file: file3
-----------
> file*
myoptiona: None
myoptionb: None
a file: file.conf
a file: file1
a file: file2
a file: file3
-----------
> --help
Usage: test.py [OPTIONS] [FILES]...
The Great CLI APP
Options:
--myoptiona TEXT
--myoptionb TEXT
--help Show this message and exit.