﻿ Python Math: Get the local and default precision - w3resource # Python Math: Get the local and default precision

## Python Math: Exercise-42 with Solution

Write a Python program to get the local and default precision.

Sample Solution:-

Python Code:

``````import decimal
with decimal.localcontext() as context:
context.prec = 2
print('Local precision:', context.prec)
print('22/7 =', (decimal.Decimal('22') / 7))

print()
print('Default precision:', decimal.getcontext().prec)
print('22 /7 =', (decimal.Decimal('22') / 7))
```
```

Sample Output:

```Local precision: 2
22/7 = 3.1

Default precision: 28
22 /7 = 3.142857142857142857142857143
```

Flowchart: Python Code Editor:

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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'
```