### Python - Convert Decimal to Octal Example

In this source code example, we will write a code to convert a decimal number to its octal equivalent in Python.

# Python - Convert Decimal to Octal Example

``````import math

# function to Convert a Decimal Number to an Octal Number.
def decimal_to_octal(num: int) -> str:
octal = 0
counter = 0
while num > 0:
remainder = num % 8
octal = octal + (remainder * math.floor(math.pow(10, counter)))
counter += 1
num = math.floor(num / 8)  # basically /= 8 without remainder if any
# This formatting removes trailing '.0' from `octal`.
return f"0o{int(octal)}"

def main() -> None:
"""Print octal equivalents of decimal numbers."""
print("\n2 in octal is:")
print(decimal_to_octal(2))  # = 2
print("\n8 in octal is:")
print(decimal_to_octal(8))  # = 10
print("\n65 in octal is:")
print(decimal_to_octal(65))  # = 101
print("\n216 in octal is:")
print(decimal_to_octal(216))  # = 330
print("\n512 in octal is:")
print(decimal_to_octal(512))  # = 1000
print("\n")

if __name__ == "__main__":
main()
``````

Output:

``````
2 in octal is:
0o2

8 in octal is:
0o10

65 in octal is:
0o101

216 in octal is:
0o330

512 in octal is:
0o1000``````

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