mirror of
https://codeberg.org/andyscott/exercism.git
synced 2024-12-22 06:43:09 -05:00
79 lines
2.7 KiB
Python
79 lines
2.7 KiB
Python
"""Functions to prevent a nuclear meltdown."""
|
|
|
|
|
|
def is_criticality_balanced(temperature, neutrons_emitted):
|
|
"""Verify criticality is balanced.
|
|
|
|
:param temperature: int or float - temperature value in kelvin.
|
|
:param neutrons_emitted: int or float - number of neutrons emitted per second.
|
|
:return: bool - is criticality balanced?
|
|
|
|
A reactor is said to be critical if it satisfies the following conditions:
|
|
- The temperature is less than 800 K.
|
|
- The number of neutrons emitted per second is greater than 500.
|
|
- The product of temperature and neutrons emitted per second is less than 500000.
|
|
"""
|
|
|
|
if (
|
|
temperature < 800
|
|
and neutrons_emitted > 500
|
|
and temperature * neutrons_emitted < 500000
|
|
):
|
|
return True
|
|
|
|
return False
|
|
|
|
|
|
def reactor_efficiency(voltage, current, theoretical_max_power):
|
|
"""Assess reactor efficiency zone.
|
|
|
|
:param voltage: int or float - voltage value.
|
|
:param current: int or float - current value.
|
|
:param theoretical_max_power: int or float - power that corresponds to a 100% efficiency.
|
|
:return: str - one of ('green', 'orange', 'red', or 'black').
|
|
|
|
Efficiency can be grouped into 4 bands:
|
|
|
|
1. green -> efficiency of 80% or more,
|
|
2. orange -> efficiency of less than 80% but at least 60%,
|
|
3. red -> efficiency below 60%, but still 30% or more,
|
|
4. black -> less than 30% efficient.
|
|
|
|
The percentage value is calculated as
|
|
(generated power/ theoretical max power)*100
|
|
where generated power = voltage * current
|
|
"""
|
|
|
|
efficiency = ((voltage * current) / theoretical_max_power) * 100
|
|
|
|
if efficiency >= 80:
|
|
return "green"
|
|
if efficiency >= 60:
|
|
return "orange"
|
|
if efficiency >= 30:
|
|
return "red"
|
|
|
|
return "black"
|
|
|
|
|
|
def fail_safe(temperature, neutrons_produced_per_second, threshold):
|
|
"""Assess and return status code for the reactor.
|
|
|
|
:param temperature: int or float - value of the temperature in kelvin.
|
|
:param neutrons_produced_per_second: int or float - neutron flux.
|
|
:param threshold: int or float - threshold for category.
|
|
:return: str - one of ('LOW', 'NORMAL', 'DANGER').
|
|
|
|
1. 'LOW' -> `temperature * neutrons per second` < 90% of `threshold`
|
|
2. 'NORMAL' -> `temperature * neutrons per second` +/- 10% of `threshold`
|
|
3. 'DANGER' -> `temperature * neutrons per second` is not in the above-stated ranges
|
|
"""
|
|
|
|
if temperature * neutrons_produced_per_second < threshold * 0.9:
|
|
return "LOW"
|
|
|
|
if temperature * neutrons_produced_per_second <= threshold * 1.1:
|
|
return "NORMAL"
|
|
|
|
if temperature * neutrons_produced_per_second > threshold * 1.1:
|
|
return "DANGER"
|