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在我的应用程序时,命令,不能正确解析,我有这样一个解析器:Python的argparse - 使用subparsers和家长
description = ("Cluster a matrix using bootstrap resampling or "
"Bayesian hierarchical clustering.")
sub_description = ("Use these commands to cluster data depending on "
"the algorithm.")
parser = argparse.ArgumentParser(description=description, add_help=False)
subparsers = parser.add_subparsers(title="Sub-commands",
description=sub_description)
parser.add_argument("--no-logfile", action="store_true", default=False,
help="Don't log to file, use stdout")
parser.add_argument("source", metavar="FILE",
help="Source data to cluster")
parser.add_argument("destination", metavar="FILE",
help="File name for clustering results")
然后,我添加了一系列的子解析器像这样的(使用功能,因为它们是长):
setup_pvclust_parser(subparsers, parser)
setup_native_parser(subparsers, parser)
这些调用(例如一个):
def setup_pvclust_parser(subparser, parent=None):
pvclust_description = ("Perform multiscale bootstrap resampling "
"(Shimodaira et al., 2002)")
pvclust_commands = subparser.add_parser("bootstrap",
description=pvclust_description, parents=[parent])
pvclust_commands.add_argument("-b", "--boot", type=int,
metavar="BOOT",
help="Number of permutations",
default=100)
# Other long list of options...
pvclust_commands.set_defaults(func=cluster_pvclust) # The function doing the processing
问题为t不知何故,解析命令行失败了,我相信这是我的错,在某个地方。运行时的示例:
my_program.py bootstrap --boot 10 --no-logfile test.txt test.pdf
my_program.py bootstrap: error: too few arguments
就好像解析是某种错误。如果在子分析器调用中删除父项= [],此行为会消失,但我宁愿避免它,因为它会产生大量重复。
编辑:在add_argument
调用后移动subparsers
调用修复了部分问题。不过,现在解析器无法正常解析子:
my_program.py bootstrap --boot 100 --no-logfile test.txt test.pdf
my_program.py: error: invalid choice: 'test.txt' (choose from 'bootstrap', 'native')