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: 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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