定义了python函数,但引发了NameError

时间:2018-05-25 09:34:30

标签: python scope namespaces

环境: Opensuse Linux 42.3,python 3.4.6,在eclipse下运行

对于自动测试系统,我从测试用例中生成python脚本。 执行脚本会遇到错误

NameError: name 'setVariable' is not defined

生成的脚本导入名为testfunc的模块,该模块定义了函数:

testfunc.py:

import sys

print("defining 'saveDeviceStatus'")
def saveDeviceStatus(devicePath,fq_fileName):
    print("ssaveDeviceStatus:")
    print("device '%s'" % devicePath)
    print("filePath '%s'" % fq_fileName)

print("defining 'setVariable'")
def setVariable(path,value):
    print("setVariable:")
    print("path '%s'" % path)
    print("value '%s'" % value)

print("defining 'compareDeviceStatus'")
def compareDeviceStatus(device,filename,options):
    print("compareDeviceStatus:")
    print("device '%s'" % device)
    print("filename '%s'" % filename)
    print(options)

print("defining 'checkResults'")
def checkResults(checkList):
    print("checkResults:")
    print(checkList)

生成的脚本如下所示:

t_0030_1206_001.py:

#!/usr/bin/python3
#
import time
import os,sys
import importlib.util
spec = importlib.util.spec_from_file_location("testFunctions", "../")
sys.path.append("/home/heinrich/git/swisbox/swibTestPy/pyLib/")
import testfunc

os.chdir('/home/heinrich/git/swisbox/swib61850/test/tryAutomation/nanopi/pilot_dal-static-lib/180525T093506/')
sys.path.append('/home/heinrich/git/swisbox/swibTestPy/src/testlinkFiles/')


# draw actual status
saveDeviceStatus("SWIBCLS1","beforeSwitch_to_1")

checkResults([
    compareDeviceStatus("SWIBCLS1","beforeSwitch_to_1",["nodate"])
    ])

执行脚本输出

$ ./t_0030_1206_001.py 
defining 'saveDeviceStatus'
defining 'setVariable'
defining 'compareDeviceStatus'
defining 'checkResults'
Traceback (most recent call last):
  File "./t_0030_1206_001.py", line 17, in <module>
    saveDeviceStatus("SWIBCLS1","beforeSwitch_to_1")
NameError: name 'saveDeviceStatus' is not defined
$

虽然执行了打印语句,(对我来说)表明函数已定义,但调用它们会导致错误。我在这里错过了什么?我可以运行哪些额外的诊断程序?

2 个答案:

答案 0 :(得分:0)

这可能有所帮助:

mod.py:

def my_fun():
    print ("Hello, world")

main.py:

import mod
my_func()
执行

python3 main.py 
Traceback (most recent call last):
  File "main.py", line 3, in <module>
    my_func()
NameError: name 'my_func' is not defined

您可以通过导入功能

来修复
from mod import my_fun

或使用:

mod.my_fun()

因此,在您的情况下,请使用:testfunc.saveDeviceStatus(..)或使用from testfunc import saveDeviceStatus

答案 1 :(得分:0)

首先,该错误正在抱怨saveDeviceStatus,而不是setVariable

不过,这不应该让你感到惊讶;你不能在任何地方导入saveDeviceStatus。你导入testfunc;所以你应该通过这个名称来引用这些功能。

testfunc.saveDeviceStatus("SWIBCLS1","beforeSwitch_to_1")

testfunc.checkResults([
    testfunc.compareDeviceStatus("SWIBCLS1","beforeSwitch_to_1",["nodate"])
])

另请注意,这一切都非常不顺便;您应该使用lower_case_with_underscores作为函数名称,而不是camelCase