在不带exec/eval的字符串中调用代码，python
我有一段代码，当玩家试图吃东西时执行：在不带exec/eval的字符串中调用代码，python,python,reference,eval,exec,Python,Reference,Eval,Exec,我有一段代码，当玩家试图吃东西时执行： def eat(target='object'): global current_room global locations global inventory if target in inventory: items[target]['on_eat'] #This is showing no results. else: print 'You have no ' + target +
def eat(target='object'):
global current_room
global locations
global inventory
if target in inventory:
items[target]['on_eat'] #This is showing no results.
else:
print 'You have no ' + target + ' to eat.'
我已经看到了许多类似问题的答案，但它们并没有处理函数唯一的参数——更确切地说，它们更像是您可以将函数和函数参数存储为
部分from functools import partial
items = {
'strawberry': {
'weight': 1,
'text': 'The strawberry is red',
'on_eat': partial(normal_eat, 'strawberry', 'pretty good, but not as sweet as you expected')
},
'trees': {
'weight': 50,
'text': 'The trees are tall with large, leaf filled branches blocking out a majority of sunlight.',
'on_eat': partial(forcesay, 'Eating trees? What the hell is your problem?')
}
def eat(target='object'):
# those globals are probably not necessary
if target in inventory:
items[target]['on_eat']() #Add ()'s to call the partial
else:
print 'You have no ' + target + ' to eat.'
您可以使用代码模块
def eat(target='object'):
import code
console = code.InteractiveConsole(locals()) # make a python interpreter with local vars
if target in inventory:
console.push("items[target]['on_eat']")
else:
print 'You have no ' + target + ' to eat.'
部分函数的另一种替代方法是编写如下项
items = {
'strawberry': {
'weight': 1,
'text': 'The strawberry is red',
'on_eat': (normal_eat,('strawberry', 'pretty good, but not as sweet as you expected'))
},
'trees': {
'weight': 50,
'text': 'The trees are tall with large, leaf filled branches blocking out a majority of sunlight.',
'on_eat': (forcesay,('Eating trees? What the hell is your problem?',))
}
}
def eat(target='object'):
if target in inventory:
func, args = items[target]['on_eat']
func(*args)
else:
print 'You have no ' + target + ' to eat.'
items = {
'strawberry': {
'weight': 1,
'text': 'The strawberry is red',
'on_eat': (normal_eat,('strawberry', 'pretty good, but not as sweet as you expected'))
},
'trees': {
'weight': 50,
'text': 'The trees are tall with large, leaf filled branches blocking out a majority of sunlight.',
'on_eat': (forcesay,('Eating trees? What the hell is your problem?',))
}
}
def eat(target='object'):
if target in inventory:
func, args = items[target]['on_eat']
func(*args)
else:
print 'You have no ' + target + ' to eat.'
你不需要那些
global