Creating classes inside a loop Python

Creating classes inside a loop Python

By : user2950708
Date : November 17 2020, 11:58 AM
should help you out The class statement requires a hard-coded class name. You can use the type function, however, to create such dynamic classes.
code :
names = ['name1', 'name2']
class_dict = {}
for name in names:
    # statements to prepare d
    class_dict[name] = type(name, (object,), d)
d = {}
d['foo'] = 5
def initializer(self, x):
    self.x = x + 6
d['__init__'] = initializer
MyClass = type('MyClass', (object,), d)
class MyClass(object):
    foo = 5
    def __init__(self, x):
        self.x = x + 6

Share : facebook icon twitter icon
Scope of classes inside of functions and classes inside of a class in python

Scope of classes inside of functions and classes inside of a class in python

By : Ben Davis
Date : March 29 2020, 07:55 AM
hope this fix your issue The thing to realize is that the class statement just creates a variable whose value is a class. The way the resulting class's scope works is the same the way a variable's scope would work if you just did a normal variable assignment like x = 2.
Any variables you create inside a function are local to that function unless you specify otherwise. So using a class statement inside a function just creates a local variable whose value is a class. It can't be accessed from outside the function.
code :
def foo():
    class A(object):
def foo():
    A = 2
class A(object):
    class B(object):
class A(object):
    B = 2
Creating objects inside loop vs. creating one temp object before loop

Creating objects inside loop vs. creating one temp object before loop

By : Victor Seo
Date : March 29 2020, 07:55 AM
wish help you to fix your issue For all realistic, measurable cases, there is absolutely no difference between the two performance wise. In fact, I'm pretty sure (admittedly I don't know for sure) they result in the exact same number of assignments and reference creations. It would be stupid for the JVM to create N number of reference holders. It would simply reuse the one created during the first iteration, simply giving it the reference in the next assignment. Which means only one reference holder is used for both cases (assuming this is true).
Creating a counter inside a Python for loop

Creating a counter inside a Python for loop

By : Mazen Kassab
Date : March 29 2020, 07:55 AM
Any of those help This (creating an extra variable before the for-loop) is not pythonic .
The pythonic way to iterate over items while having an extra counter is using enumerate:
code :
for index, item in enumerate(iterable):
    print(index, item)
lst = ["a", "b", "c"]

for index, item in enumerate(lst):
  print(index, item)
0 a
1 b
2 c
classes and Loop inside python

classes and Loop inside python

By : cris
Date : March 29 2020, 07:55 AM
wish helps you what you doing is returning after it loops and gets the first value and thus it gives back only the first value
Also, you are not incrementing your loop this will result in an infinite loop.
code :
while i < x:
    value = A[i]
return y
Python: Creating new lists inside while loop

Python: Creating new lists inside while loop

By : N. Tarakanovskiy
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , So in my approach to First-improvement local search I have encountered a point in which I can't seem to move forward. That if-statement and the variables assignment are driving me nuts. When I "debug" it with prints I can't get to see what happens and I need someone to shed light on this matter. , I solved it just adding [:] when assigning the new lists:
code :
best = initial[:]
sol = best[:]
best = sol[:]
Related Posts Related Posts :
  • Read data with NAs into python and calculate mean row-wise
  • How to print telnet response line by line?
  • Pylint: Avoid checking INSIDE DOCSTRINGS (global directive / rcfile)
  • Sending MIDI messages using Python (on Ubuntu)
  • Generate Dictionary in Python at run time
  • code is cluttered by try-except in Python
  • Python class inheritance - spooky action
  • Why is a Python multiprocessing daemon process not printing to standard output?
  • How to feed numeric data into a classifier?
  • How to unambiguously identify a Model as a lowercase string in Django
  • How to get only one specific line from subprocess output
  • Python network communication with encryption and password protection
  • with urllib urlopen read function but get none
  • django could not find database in ubuntu
  • How to replace a character in a string with a non ascii character in python?
  • Self learning data evaluation in Python
  • Django: UnicodeDecodeError while trying to read template 500.html
  • how can you Import an os variable into PYTHON and have it update?
  • Browse Folders to open a file in python
  • sql select group by a having count(1) > 1 equivalent in python pandas?
  • Why Insert command when button clicked OpenERP
  • Pandas dataframe from nested dictionary to melted data frame
  • Which is more efficient in Python: list.index() or dict.get()
  • Xor bits in python
  • A simple python confusion about format string
  • Finding index of a list containing an item, also in a list
  • How to test Domain is it 'www' domain or subdomain or name server domain or mail domain in python?
  • Keydown event for Pygame
  • Lazy loading csv with pandas
  • Use webdriver,python,beautifulsoup to retrieve dynamic website
  • Scrapy is Visiting same Url despite dont_filter=False
  • How to add support for SNI in python 2.7
  • Pandas: np.where with multiple conditions on dataframes
  • How to get meaningful words by splitting a continuous string?
  • TypeError: 'numpy.ndarray' object is not callable while extracting index and elements are stored in different array in p
  • Python: comparing list to a string
  • Is there any way to write '\r' into a file on linux with python?
  • matplotlib retrieve color from plt.plot command
  • Scrapy JSON export issues
  • beautifulsoup to retrieve the date
  • Django Rest Framework 3.0: Saving Nested, Many-To-One Relationship
  • Lost connection to MySQL server during Python connection
  • uploadede file path django
  • How to reduce a data with the longest string under pandas framework?
  • Single line for-loop to build a dictionary?
  • How to read in lines until a certain line?
  • Beautifulsoup to retrieve the href list
  • Python - Vincenty's inverse formula not converging (Finding distance between points on Earth)
  • Saving django model instance into another model
  • Same URL request fails with python->urllib but not with curl
  • Python dictionary: set value as the key string
  • With setuptools, when does namespace packages __init__.py files disappears?
  • Paraview: NameError: name 'inputs' is not defined
  • Too many values to unpack during template rendering
  • A different type of iterative function
  • Test if value exists in several lists
  • Go and Python HMAC libraries give different results
  • Python Nested Loop Working Weirdly
  • Why is this not assigning the correct value?
  • 'numpy.ndarray' object is not callable
  • shadow
    Privacy Policy - Terms - Contact Us © ourworld-yourmove.org