class A ():
def __init__(self):
print("A")
class B (A):
def __init__(self):
super(B, self).__init__()
b = B ()
* * an error occurred when executing under py2
super (B, self). _ init__ ()
TypeError: must be type, not classobj**
there is no problem if parent class A uses the new class
class A (object):
def __init__(self):
print("A")
Why!?
python.org/2/library/functions.html?highlight=super-sharpsuper" rel=" nofollow noreferrer "> super description
super (type [, object-or-type])
Note: super () only works for new-style classes.
I don't know the nuances between Python2 and Python3, but I think there's something wrong with your inheritance.
super(B, self).__init__()Why do you inherit class B under custom class B? Let B be both a son and a father, go against the laws of nature and affirm Error. As said on the first floor: "super () only works for new-style classes."
maybe I misunderstood it. If there are any mistakes, please don't be stingy and guide me to correct them.
for example, how to view the source code of python built-in functions give an example: -sharp xrang for i in xrange(10): print i -sharp -sharp pass class xrange(object): """ xrange(stop) -> xrange object xrange(star...
OpenWRT joins the python2.7.9, result to report an error, lacks the module, but how to solve? Python build finished, but the necessary bits to build these modules were not found: _bsddb _sqlite3 _tkinter bsddb185 ...
python is a pure rookie. I just want to use a process daemon like nodemon. Some people recommend daemon. python and pip are installed on disk D in the English directory. There is a problem installing daemon, encoding using pip, so the installation of ...
number = input(u : n .encode( utf-8 )) -sharpnumber = "%03d"%number num_list = list(str(number)) num_list = [int(num_list[i]) for i in range(len(num_list))] print num_list The code is as above, it is OK to enter other numbers. Can print ...