﻿ Python Exercises: Check a decimal with a precision of 2 - w3resource # Python: Check a decimal with a precision of 2

## Python Regular Expression: Exercise-48 with Solution

Write a Python program to check a decimal with a precision of 2.

Sample Solution:-

Python Code:

``````def is_decimal(num):
import re
dnumre = re.compile(r"""^[0-9]+(\.[0-9]{1,2})?\$""")
result = dnumre.search(num)
return bool(result)

print(is_decimal('123.11'))
print(is_decimal('123.1'))
print(is_decimal('123'))
print(is_decimal('0.21'))

print(is_decimal('123.1214'))
print(is_decimal('3.124587'))
print(is_decimal('e666.86'))
```
```

Sample Output:

```True
True
True
True
False
False
False
```

Pictorial Presentation:  Flowchart: Python Code Editor:

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## Python: Tips of the Day

Merges two or more lists into a list of lists, combining elements from each of the input lists based on their positions

Example:

```def tips_merge(*args, fill_value=None):
max_length = max([len(lst) for lst in args])
result = []
for i in range(max_length):
result.append([
args[k][i] if i < len(args[k])
else fill_value for k in range(len(args))
])
return result
print(tips_merge(['x', 'y'], [1, 2], [True, False]))
print(tips_merge(['x'], [1, 2], [True, False]))
print(tips_merge(['x'], [1, 2], [True, False], fill_value = '_'))
```

Output:

```[['x', 1, True], ['y', 2, False]]
[['x', 1, True], [None, 2, False]]
[['x', 1, True], ['_', 2, False]]
```