How to read module/class from list of strings?

[popular_dog]

How can I get 'string_wrong' to print out what 'correct' is printing out?

from google.cloud import bigquery

corret = [bigquery.SchemaField("field1","STRING", mode="NULLABLE"),
bigquery.SchemaField("field2","STRING", mode="NULLABLE")]

string_wrong = ['bigquery.SchemaField("field1","STRING", mode="NULLABLE")',
'bigquery.SchemaField("field2","STRING", mode="NULLABLE")']

print(corret)
print(string_wrong)

correct output:

Output:
[SchemaField('field1', 'STRING', 'NULLABLE', None, None, (), None), SchemaField('field2', 'STRING', 'NULLABLE', None, None, (), None)]

string_wrong output:

Output:
['bigquery.SchemaField("field1","STRING", mode="NULLABLE")', 'bigquery.SchemaField("field2","STRING", mode="NULLABLE")']