﻿ Python: Construct a Decimal from a float and a Decimal from a string - w3resource

# Python: Construct a Decimal from a float and a Decimal from a string

## Python module: Exercise-1 with Solution

Write a Python program to construct a Decimal from a float and a Decimal from a string. Also represent the decimal value as a tuple. Use decimal.Decimal

Sample Solution:

Python Code:

``````import decimal
print("Construct a Decimal from a float:")
pi_val = decimal.Decimal(3.14159)
print(pi_val)
print(pi_val.as_tuple())
print("\nConstruct a Decimal from a string:")
num_str = decimal.Decimal("123.25")
print(num_str)
print(num_str.as_tuple())
```
```

Sample Output:

```Construct a Decimal from a float:
3.14158999999999988261834005243144929409027099609375
DecimalTuple(sign=0, digits=(3, 1, 4, 1, 5, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 2, 6, 1, 8, 3, 4, 0, 0, 5, 2, 4, 3, 1, 4, 4, 9, 2, 9, 4, 0, 9, 0, 2, 7, 0, 9, 9, 6, 0, 9, 3, 7, 5), exponent=-50)

Construct a Decimal from a string:
123.25
DecimalTuple(sign=0, digits=(1, 2, 3, 2, 5), exponent=-2)
```

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Python Code Editor:

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﻿

## Python: Tips of the Day

Inverts a dictionary with non-unique hashable values:

Example:

```def tips_collect_dictionary(obj):
inv_obj = {}
for key, value in obj.items():
inv_obj.setdefault(value, list()).append(key)
return inv_obj
ages = {
"Owen": 25,
"Jhon": 25,
"Pepe": 15,
}
print(tips_collect_dictionary(ages))
```

Output:

```{25: ['Owen', 'Jhon'], 15: ['Pepe']}
```

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