creating txt file containing variablenames as string plus value

问题

I want to create a file with takes a given list of variables for example:

a1 = 3
a2 = 3
a3 = 4
a4 = 6
a5 = 'test'
a6 = 19
a7 = 19

The output should be look as follows:

test.txt

a1 = 3
a2 = 3
a3 = 4
a4 = 6
a5 = 'test'
a6 = 19
a7 = 19

Content of txt file.

It is needed for setting up a model.

I tried this way:

def namestr(obj, namespace):
    names = [name for name in namespace if namespace[name] is obj]
    name = [n for n in names if 'a' in n]
    return name[0]

with open("setupfile.txt", "w") as setupfile:
    x = [a1, a2, a3, a4, a5, a6, a7]
    for name in x:
        print(name)
        setupfile.write(namestr(name, globals()) + "=" + repr(name) +"\n")
        print(repr(name))
    setupfile.close()

But this is not a sufficient solution. The variables with same values are having the same name in the textfile.

Is there a better solution to create a textfile as described? Maybe a better way to get the name of the variables.

回答1:

I've had the same issue. You should probably try it this way, if it works for you.

class NewClass(object): pass

names = NewClass()
vars = ['a1', 'a2', 'a3','a4','a5','a6','a7']

for v in vars: 
    setattr(names, v, eval(v)) 


with open("setupfile.txt","w") as setupfile:
    members = [attr for attr in dir(names) if not callable(getattr(names, attr)) and not attr.startswith("__")]

    for i in range(0,len(members)):
        #print(name)
        setupfile.write(members[i] + '=' + str(getattr(names, members[i])) + "\n")
        #print(repr(name))
setupfile.close()`

来源：https://stackoverflow.com/questions/62943768/creating-txt-file-containing-variablenames-as-string-plus-value

标签

python

global

variable-names