python エラー「AttributeError: ‘xxx’ object has no attribute ‘xxx’」が発生した場合の対処法

class Human:
    def __init__(self):
        self.name = "hoge"
        self.age = 10
        self.address = "Tokyo"

human = Human()

print(human.name) # hoge
print(human.weight)

    print(human.weight)
AttributeError: 'Human' object has no attribute 'weight'

class Human:
    def __init__(self):
        self.name = "hoge"
        self.age = 10
        self.address = "Tokyo"
        self.weight = 65

human = Human()

print(human.name) # hoge
print(human.weight) # 65

class Human:
    def __init__(self):
        self.name = "hoge"
        self.age = 10
        self.address = "Tokyo"

human = Human()

try:
    print(human.name) # hoge
    print(human.weight)

except AttributeError:
    print("AttributeErrorが発生")

s = "hello"
s.sort()

AttributeError: 'str' object has no attribute 'sort'

s = "hello"

print("".join(sorted(s))) # ehllo

print(sorted(s)) # ['e', 'h', 'l', 'l', 'o']

import numpy as  np

arr = np.array([1.0, 2.0, 3.0, 4.0, 5.0])

AttributeError: module 'numpy' has no attribute 'array'

import re

str1 = "he22o"

print(bool(re.serch(r'\d', str1))) # True

Traceback (most recent call last):
  File "C:\sample\test.py", line 8, in <module>
    print(bool(re.serch(r'\d', str1))) # True
AttributeError: module 're' has no attribute 'serch'. Did you mean: 'search'?