将python脚本的参数作为参数传递到它的函数中

Question

I am trying to write a python script which needs to take input arguments, to be used inside the script when calling a function.

Following is working inside python shell:

>>> result = client.call('SoftLayer_Hardware', 'getAllObjects', filter={'id': {'operation': '1442567'}}, limit=300, mask='mask[id, hostname, accountId, primaryIpAddress, softwareComponents[passwords], upstreamHardware[id, hostname], uplinkNetworkComponents[id, name, port, uplink[uplinkComponent[id, hardwareId, name, port]]]]')
>>> 

This way is also working properly:

>>> var_f = {'id': {'operation': '1442567'}}
>>> var_m = "mask[id, hostname, domain, accountId, datacenter, networkVlans, networkManagementIpAddress, primaryBackendIpAddress, primaryIpAddress, softwareComponents[modifyDate, passwords[username, password], softwareLicense[softwareDescriptionId, softwareDescription[longDescription]]], uplinkNetworkComponents[id, name, port, primaryIpAddress, networkVlanId, macAddress, speed, status, uplink[id, uplinkComponent[id, hardwareId, name, port, duplexModeId, maxSpeed, speed, status, networkPortChannelId, networkVlanId]]], upstreamHardware[id, hostname]]"
>>> result = client.call('SoftLayer_Hardware', 'getAllObjects', filter=var_f, limit=300, mask=var_m)
>>>

However when I write similar code in script file:

#!/usr/bin/python

import sys
import softlayer_api_common as ims
client = ims.connect_to_api(neteng_user=True)

filterinput = sys.argv[1]
maskinput = sys.argv[2]

print 'First argument'
print filterinput
print 'Second argument'
print maskinput

result = client.call('SoftLayer_Hardware', 'getAllObjects', filter=filterinput, limit=300, mask=maskinput)

sys.exit()

Then calling it with two argument as follows, it is failing:

$ ./imsquery "{'id': {'operation': '1442567'}}" "mask[id, hostname, domain, accountId, datacenter, networkVlans, networkManagementIpAddress, primaryBackendIpAddress, primaryIpAddress, softwareComponents[modifyDate, passwords[username, password], softwareLicense[softwareDescriptionId, softwareDescription[longDescription]]], uplinkNetworkComponents[id, name, port, primaryIpAddress, networkVlanId, macAddress, speed, status, uplink[id, uplinkComponent[id, hardwareId, name, port, duplexModeId, maxSpeed, speed, status, networkPortChannelId, networkVlanId]]], upstreamHardware[id, hostname]]"
First argument
{'id': {'operation': '1442567'}}
Second argument
mask[id, hostname, domain, accountId, datacenter, networkVlans, networkManagementIpAddress, primaryBackendIpAddress, primaryIpAddress, softwareComponents[modifyDate, passwords[username, password], softwareLicense[softwareDescriptionId, softwareDescription[longDescription]]], uplinkNetworkComponents[id, name, port, primaryIpAddress, networkVlanId, macAddress, speed, status, uplink[id, uplinkComponent[id, hardwareId, name, port, duplexModeId, maxSpeed, speed, status, networkPortChannelId, networkVlanId]]], upstreamHardware[id, hostname]]

Traceback (most recent call last):
  File "./imsquery", line 15, in <module>
    result = client.call('SoftLayer_Hardware', 'getAllObjects', filter=filterinput, limit=300, mask=maskinput)
  File "/usr/lib/python2.7/site-packages/SoftLayer/API.py", line 265, in call
    return self.transport(request)
  File "/usr/lib/python2.7/site-packages/SoftLayer/transports.py", line 247, in __call__
    raise exceptions.TransportError(ex.response.status_code, str(ex))
SoftLayer.exceptions.TransportError: TransportError(500): 500 Server Error: Internal Server Error for url: https://internal.applb.dal01.softlayer.local/v3/internal/xmlrpc/SoftLayer_Hardware
$

Looks the script's input arguments are being taken into the variables, however having problem with using those variable's contents when calling the function, not working with this syntax. Any suggestions?

Answer 1

It fails because of argument filterinput . It is expected to be dict type as input to internal function. But being passing from command line it doesn't convert to dict automatically. Here, try to print your filterinput type:

Print Output:

...
First argument
{'id': {'operation': '1442567'}}
<class 'str'>
Second argument
...

You have to convert it from str to dict manually using json.loads() , for example

Code:

#!/usr/bin/python

import sys
import json
import softlayer_api_common as ims
client = ims.connect_to_api(neteng_user=True)

filterinput = json.loads(sys.argv[1])
maskinput = sys.argv[2]
...

BUT: Don't forget use json standard for your argument, so instead of "{'id': {'operation': '1442567'}}" you should pass '{"id": {"operation": 1442567}}' :

$ ./imsquery '{"id": {"operation": 1442567}}' "mask[id, hostname, domain, accountId, datacenter, networkVlans, networkManagementIpAddress, primaryBackendIpAddress, primaryIpAddress, softwareComponents[modifyDate, passwords[username, password], softwareLicense[softwareDescriptionId, softwareDescription[longDescription]]], uplinkNetworkComponents[id, name, port, primaryIpAddress, networkVlanId, macAddress, speed, status, uplink[id, uplinkComponent[id, hardwareId, name, port, duplexModeId, maxSpeed, speed, status, networkPortChannelId, networkVlanId]]], upstreamHardware[id, hostname]]"

Print Output:

First argument
{'id': {'operation': 1442567}}
<class 'dict'>
Second argument
...