argparse - 如何使用 kwargs 或 argv 传递给方法 [英] argparse - how pass to a method with kwargs or argv
问题描述
我一直在寻找一种将 **kwargs
或 *argv
与 argparse
结合使用的方法.我将从硬编码到动态方式.
I've been looking for a way to use **kwargs
or *argv
with argparse
. I will from hard code to a dynamic way.
这是我的硬代码以及我将如何使用它的示例.
Here is my hard code and a example how I will use it.
def get_parser():
parser = argparse.ArgumentParser()
parser.add_argument("-r",
"--range",
dest="r",
nargs=8,
help="AddRange Parameters")
parser.add_argument("-p",
"--parameters",
dest="p",
nargs=8,
help="SetDefaults as Parameters")
parser.add_argument("-r",
"--range",
dest="r",
nargs=8,
help="AddRange Parameters")
return parser
"""Create a Template for a Job"""
def create_Template(temp3_,temp_tournsize,temp_popsize,temp0_,temp1_,temp_ngen,temp_run,tmpverb):
#single GA job
logging.basicConfig(level=logging.DEBUG)
template = job.JobTemplate(runGASimple)
print tmpverb
template.setDefaults(temp3=temp3_, tournsize=temp_tournsize, popSize=temp_popsize, temp0=temp0_, temp1=temp1_, ngen=temp_ngen, number_of_runs=temp_run, verbose=tmpverb)
return template
"""Run a simple Job"""
def ajob_run(template):
ajob = job.Job(template)
ajob.run()
pass
"""change Default params with AddRange"""
def add_Range(var_temp0,var_start,var_end,var_stepSize,var_temp1,var_start2,var_end2,var_stepSize2,tmp_template):
jobCreator = job.JobCreator()
#jobCreator.addRange('temp0', start=0.0, end=1.0, stepSize=0.1)
jobCreator.addRange(var_temp0, start= var_start, end=var_end, stepSize=var_stepSize)
#jobCreator.addRange('temp1', start=0.0, end=1.0, stepSize=0.1)
jobCreator.addRange(var_temp1, start=var_start2, end=var_end2, stepSize=var_stepSize2)
# all other params will take defaults
jobs = jobCreator.generateJobs(tmp_template)
return jobs
"""Create a Batchjob from Jobs"""
def batch_Job(tmp_jobs):
batchJob = job.BatchJob(tmp_jobs, 5)
return batchJob
if (__name__ == "__main__"):
args = get_parser().parse_args()
if (args.p and args.r):
print 'AddRange with Parameters Input Start:'
temp = create_Template(float(args.p[0]),int(args.p[1]),int(args.p[2]),float(args.p[3]),float(args.p[4]),int(args.p[5]),int(args.p[6]),ast.literal_eval(args.p[7]))
tmpjobs = add_Range(args.r[0],float(args.r[1]),float(args.r[2]),float(args.r[3]),args.r[4],float(args.r[5]),float(args.r[6]),float(args.r[7]),temp)
results = batch_Job(tmpjobs)
print 'AddRange with Parameters Input Ende.'
elif (args.p):
print 'Parameters Input Start:'
ajob_run(create_Template(
float(args.p[0]),
int(args.p[1]),
int(args.p[2]),
float(args.p[3]),
float(args.p[4]),
int(args.p[5]),
int(args.p[6]),
ast.literal_eval(args.p[7])))
print 'Parameters Input Ende.'
CLI.py -p 0.8 20 20 0.5 0.5 20 1 False
然后是一个很长的输出,其中包含来自框架的结果.
Then came a long output with results from a framework.
我的方法预料到了这一点.变量名称将来可以更改.
My method expected this. The variable names can be change in the future.
template.setDefaults(mux=0.8, tournsize=20, rangeSize=20, temp0=0.5, temp1=0.5, ngen=20, number_of_runs=1, verbose=False)
jobCreator.addRange('temp0', start=0.0, end=1.0, tournStep=0.1)
jobCreator.addRange('temp1', start=0.0, end=1.0, turns=4)
An 会像这样改变它:
An will change it like this:
setDefaults(**kwargs)
addRange(paraName,**kwargs)
我希望:
CLI.py -p temp0=1 temp1=0.4 ....temp6=8 ... -r temp0 start=0 end=1 tournStep=0.1
or
CLI.py -p hn0=1 bn1=0.4 ....tp6=8 ... -r temp1 start=0 end=1 turns=4
然后将带有输入的变量名转换为:
then convert variablenames with the input to:
setDefaults()
和
addRange()
但我需要argparse
,因为我将构建一个命令行界面.
But I need the argparse
, because i will build a command line interface.
我忘记了其他方法的一些细节:
I have forgot some details about a other method:
"""change Default params with AddSpecific"""
def add_Specific(tmp_template,paraName,*params):
jobCreator = job.JobCreator()
#jobCreator.addSpecific('temp0', 0.1,0.2,0.3,0.4,....,0.7,...)
jobCreator.addRange(paraName, params)
# all other params will take defaults
jobs = jobCreator.generateJobs(tmp_template)
return jobs
这是正确的方法吗?
推荐答案
这里,parameters
参数会有 8 对的列表,例如:
Here, parameters
argument will have a list of 8 pairs, for example:
CLI.py -p argname1=v1 ... argname8=v8
(显然 argnameN
应该是所需函数的参数名称).
(obviously argnameN
should be the argument names of the desired function).
然后您可以轻松地将 args.p
(即 ['argname1=v1', ... 'argname8=v8']
)转换为字典:
You can then easily turn args.p
(which is ['argname1=v1', ... 'argname8=v8']
) into a dictionary:
def convert_value(v):
try:
return float(v) if '.' in v else int(v)
except ValueError:
# v is not a number
return v
params = dict([convert_value(n) for n in pair.split('=')] for pair in args.p)
并将其传递给您的函数:
and pass it to your function:
"""Create a Template for a Job"""
def create_Template(params):
#single GA job
logging.basicConfig(level=logging.DEBUG)
template = job.JobTemplate(runGASimple)
print tmpverb
template.setDefaults(**params)
return template
您可以通过创建两个不同的范围参数来对范围参数执行相同的操作:
You can do the same with your range argument by creating two distinct range argument:
"""change Default params with AddRange"""
def add_Range(var_1, var_2, tmp_template):
jobCreator = job.JobCreator()
#jobCreator.addRange('temp0', start=0.0, end=1.0, stepSize=0.1)
jobCreator.addRange(**var_1)
#jobCreator.addRange('temp1', start=0.0, end=1.0, stepSize=0.1)
jobCreator.addRange(**var_2)
# all other params will take defaults
jobs = jobCreator.generateJobs(tmp_template)
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