# Imports
import pandas as pd

from pandas_validate import Schema
from pandas_validate.columns import IntColumn, TextColumn


# Define your Schema
class MySchema(Schema):
	IntField = IntColumn(min_value=3, max_value=10)
	TextField = TextColumn(min_length=3, max_length=5, pattern="^[a-c]+$")


# Get your DataFrame
df = pd.DataFrame({
	'IntField': [1, 6, 11, 7],
	'TextField': ['ab', 'abcd', 'ccbbaa', 'ccb'],
	'UnknownField': [1, 2, 3, 4]
})


# Validate your DataFrame
validated_df, exceptions = MySchema.validate(df)

>>> print(validated_df)

   IntField TextField
0       NaN      None
1       6.0      None
2       NaN      None
3       7.0       ccb


>>> print(exceptions)

         column  row   value                     error                                      error_details
0      IntField  0.0       1  Column validation failed                                    The value 1 < 3
1      IntField  2.0      11  Column validation failed                                  The value 11 < 10
2     TextField  0.0      ab  Column validation failed                          The value ab is too short
3     TextField  1.0    abcd  Column validation failed  The value abcd does not match the regular expr...
4     TextField  2.0  ccbbaa  Column validation failed                       The value ccbbaa is too long
5  UnknownField  NaN    None            Unknown Column     The column "UnknownField" is not in the Schema