Python Upper function

import pandas as pd
df = pd.DataFrame([{"email": "test@gmail.com"}])
is_upper = lambda x: x.upper() if isinstance(x, str) else x
df = df.applymap(trim_strings)
a = df.to_dict("records")

The response I get :

[{'email': 'test@gmail.com'}]

The response I expected :

[{'email': 'TEST@GMAIL.COM'}]

What can be the issue here?

>Solution :

To get the expected output, consider try this:

df['email'] = df['email'].str.upper()

Your df:

    email
0   TEST@GMAIL.COM

to get the dictionary:

foo_dict = df.to_dict()
foo_dict 

{'email': {0: 'TEST@GMAIL.COM'}}

Block Code:

import pandas as pd
df = pd.DataFrame([{"email": "test@gmail.com"}])
df['email'] = df['email'].str.upper()
foo_dict = df.to_dict()