python: TypeError: 'str' 对象不可调用

Question

我正在尝试用pickle加载一个二进制文件，这个文件里面有一个列表记录，像这样：

import pickle
class player_energy_usage():
def __init__(self):
    self.weapons = 25
    elf.shields = 25
    self.life_support = 25
    self.engines = 25

def p_eu_init():
    global p_energy   
    p_energy = []
    player_ship_energy = player_energy_usage()
    p_energy.append(player_ship_energy)
    pickle.dump(p_energy,open('p_energy.dat','wb'))

p_eu_init()
pickle.load('rb'('p_energy.dat'))
print('Weapons are using {0}% of energy'.format(p_energy[0].weapons))
print('Shields are using {0}% of energy'.format(p_energy[0].shields))
print('Life Support is using {0}% of energy'.format(p_energy[0].life_support))
print('Engines is using {0}% of energy'.format(p_energy[0].engines))

但是我遇到了一个类型错误，

Traceback (most recent call last):
File "E:/Python texted based game/Tests/file loading test.py", line 18, in <module>
pickle.load('rb'('p_energy.dat'))
TypeError: 'str' object is not callable

谢谢你的帮助。

Answer 1

这不是正确的写法。应该是这样：

p_energy = pickle.load(open('p_energy.dat', 'rb'))

你实际上在做的是：

'rb'('p_energy.dat') 试图把一个字符串 'rb' 当作函数来调用，并传入参数 'p_energy.dat'，这就是你为什么会看到错误提示 'str' object is not callable 的原因。