﻿ Python Math: Round up a number to specified digits - w3resource # Python Math: Round up a number to specified digits

## Python Math: Exercise-69 with Solution

Write a Python function to round up a number to specified digits.

Sample Solution:-

Python Code:

``````import math

def roundup(a, digits=0):
n = 10**-digits
return round(math.ceil(a / n) * n, digits)

x = 123.01247
print("Original  Number: ",x)
print(roundup(x, 0))
print(roundup(x, 1))
print(roundup(x, 2))
print(roundup(x, 3))
```
```

Sample Output:

```Original  Number:  123.01247
124
123.1
123.02
123.013
```

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## Python: Tips of the Day

Python: Get the Key Whose Value Is Maximal in a Dictionary

```>>> model_scores = {'model_a': 100, 'model_z': 198, 'model_t': 150}
>>> # workaround
>>> keys, values = list(model_scores.keys()), list(model_scores.values())
>>> keys[values.index(max(values))]
'model_z'
>>> # one-line
>>> max(model_scores, key=model_scores.get)
'model_z'
```