﻿ Pandas: Get the length of the integer of a given column in a DataFrame - w3resource

# Pandas: Get the length of the integer of a given column in a DataFrame

## Pandas: String and Regular Expression Exercise-16 with Solution

Write a Pandas program to get the length of the integer of a given column in a DataFrame.

Sample Solution:

Python Code :

``````import pandas as pd
df = pd.DataFrame({
'company_code': ['Abcd','EFGF', 'skfsalf', 'sdfslew', 'safsdf'],
'date_of_sale': ['12/05/2002','16/02/1999','25/09/1998','12/02/2022','15/09/1997'],
'sale_amount': [12348.5, 233331.2, 22.5, 2566552.0, 23.0]
})
print("Original DataFrame:")
print(df)
print("\nLength of sale_amount:")
df['sale_amount_length'] = df['sale_amount'].map(str).apply(len)
print(df)
``````

Sample Output:

```Original DataFrame:
company_code date_of_sale  sale_amount
0         Abcd   12/05/2002      12348.5
1         EFGF   16/02/1999     233331.2
2      skfsalf   25/09/1998         22.5
3      sdfslew   12/02/2022    2566552.0
4       safsdf   15/09/1997         23.0

Length of sale_amount:
company_code date_of_sale  sale_amount  sale_amount_length
0         Abcd   12/05/2002      12348.5                   7
1         EFGF   16/02/1999     233331.2                   8
2      skfsalf   25/09/1998         22.5                   4
3      sdfslew   12/02/2022    2566552.0                   9
4       safsdf   15/09/1997         23.0                   4
```

Python Code Editor:

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## Python: Tips of the Day

Python: Cache results with decorators

There is a great way to cache functions with decorators in Python. Caching will help save time and precious resources when there is an expensive function at hand.

Implementation is easy, just import lru_cache from functools library and decorate your function using @lru_cache.

```from functools import lru_cache

@lru_cache(maxsize=None)
def fibo(a):
if a <= 1:
return a
else:
return fibo(a-1) + fibo(a-2)

for i in range(20):
print(fibo(i), end="|")

print("\n\n", fibo.cache_info())
```

Output:

```0|1|1|2|3|5|8|13|21|34|55|89|144|233|377|610|987|1597|2584|4181|

CacheInfo(hits=36, misses=20, maxsize=None, currsize=20)```