您确实不需要网格的概念即可完成所需的工作。您只需要一个generator
即可将您的人口从一代传到下一代。然后,您可以使用Python的Format Specification Mini-Language在与您的示例输出匹配的表中打印值。
def propagate(num_generations, population_start = None):
if population_start is None:
population = [10, 10, 10, 30]
else:
population = population_start
for gen in range(num_generations):
yield population
population = [population[1]*2, population[0], population[1]]
population.append(sum(population))
def print_propagation(num_generations, population_start = None):
print('GENERATION\tJUVENILES\tADULTS\tSENILES\t\tTOTAL')
for gen, pops in enumerate(propagate(num_generations, population_start)):
print('{:^10}\t{:^8}\t{:^6}\t{:^7}\t\t{:^5}'.format(gen, *pops))
您可以像这样使用以上功能:
>>> list(propagate(6))
[[10, 10, 10, 30],
[20, 10, 10, 40],
[20, 20, 10, 50],
[40, 20, 20, 80],
[40, 40, 20, 100],
[80, 40, 40, 160]]
>>> print_propagation(6)
GENERATION JUVENILES ADULTS SENILES TOTAL
0 10 10 10 30
1 20 10 10 40
2 20 20 10 50
3 40 20 20 80
4 40 40 20 100
5 80 40 40 160
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