How to replace a string to a variable

Question

I do a journal program, and have I have some teachers, who written as dictionaries. For example:

Joshua_Danice = {'first_name': 'Joshua', 'last_name': 'Danice',
            'supervision': ['9K', '8A', '9B'],
            'subjects': ['biology, chemistry']}

When you try to go in my program, you should print your first name and last one. It is writing itself into a variable "teacher":

def __init__(self, first_name, last_name):
    self.first_name = first_name
    self.last_name = last_name
    self.teacher = str(self.first_name + "_" + self.last_name)

So we have

self.teacher = "Joshua_Danice"

I want to replace that string to the variable, so I can use "Joshua_Danice" string as dictionary, and use keys from this one.

What's the issue, exactly?

AMC
– AMC

2020-03-14 17:12:22 +00:00
Commented Mar 14, 2020 at 17:12 — AMC
– AMC, Commented Mar 14, 2020 at 17:12

dspencer · Accepted Answer · 2020-03-14 13:18:55Z

2

I would suggest creating a teachers dictionary, which maps the name of the teacher, such as "Joshua_Danice" to the dictionary you post above, e.g.

teachers = {"Joshua_Danice":
    {'first_name': 'Joshua', 'last_name': 'Danice',
     'supervision': ['9K', '8A', '9B'],
     'subjects': ['biology, chemistry']}
}

Then retrieve the inner dictionary using:

teachers["Joshua_Danice"]

edited Mar 14, 2020 at 13:18

answered Mar 14, 2020 at 13:12

dspencer

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Arkistarvh Kltzuonstev · Accepted Answer · 2020-03-14 13:19:50Z

1

Even though it is not advised to use globals() to check and update the variables of the class, still this might be a hack for you :

Joshua_Danice = {'first_name': 'Joshua', 'last_name': 'Danice',
            'supervision': ['9K', '8A', '9B'],
            'subjects': ['biology, chemistry']}

class Whatever():
    def __init__(self, first_name, last_name):
        self.first_name = first_name
        self.last_name = last_name
        self.teacher = str(self.first_name + "_" + self.last_name)
        if self.teacher in globals():
            self.__dict__.update(globals()[self.teacher])

A better practice would surely be what dspencer suggested.

answered Mar 14, 2020 at 13:19

Arkistarvh Kltzuonstev

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