如何简化重复的Python PuLP语法？

如何将以下Python PuLP语句简化为Pythonic,可管理和正确的内容：

import pulp as lp

#delare variables
#Note that I have to model a 100 year period!
year_1 = lp.LpVariable("2011", 0, None, lp.LpInteger)    
year_2 = lp.LpVariable("2012", 0, None, lp.LpInteger)
year_. = lp.LpVariable("201.", 0, None, lp.LpInteger)
year_n = lp.LpVariable("201n", 0, None, lp.LpInteger)

#declare constraints
prob += year_1 - year_0 >= 0
prob += year_2 - year_1 >= 0
prob += year_. - year_. >= 0
prob += year_n - year_n_1 >= 0

解决方法:

列出年份而不是100年变量：

years = [lp.LpVariable(str(2011+i), 0, None, lp.LpInteger) for i in xrange(n)]

请注意,列表是0索引的,因此以前的year_1现在是年[0].

您可以循环遍历脚本的“声明约束”部分：

for year, next_year in zip(years[:-1], years[1:]):
    prob += next_year - year >= 0

标签：python,linear-programming,pulp
来源： https://codeday.me/bug/20190620/1243055.html