字符串格式的列表，转换为列表

a="[1,2,3]"
newa=a.replace('"','').replace(']','').replace('[','')
print([ int(i) for i in newa.split(',')])

'''
[1, 2, 3]
'''


a="'[1,2,3]'"
newa=a.replace('\'[','').replace(']\'','')
b=[ int(i) for i in newa.split(',')]
print(b)
'''
[1, 2, 3]
'''