AttributeError: type object ' ' has no attribute 'write'
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My code runs into an AttributeError and I don't know how to fix it
this is my class:
class Reservation: def __init__(self, passengerName, departureCity, destinationCity, dateOfTravel, timeOfTravel, numberOfTickets): self.passengerName = passengerName self.departureCity = departureCity self.destinationCity = destinationCity self.dateOfTravel = dateOfTravel self.timeOfTravel = timeOfTravel self.numberOfTickets = numberOfTickets reservationList = list()
with open("reservation.txt", "w") as file: for reservation in reservationList: reservation.write(reservation.passengerName + "," + reservation.departureCity + "," + reservation.destinationCity + "," + reservation.dateOfTravel + "," + reservation.timeOfTravel + "," + str(reservation.numberOfTickets) + "\n") file.close()
File "C:/Users//Desktop/pld/ticket_reservation5.py", line 183, in <module> main() File "C:/Users//Desktop/pld/ticket_reservation5.py", line 176, in main reservation.write(reservation.passengerName + "," + reservation.departureCity + "," + reservation.destinationCity + AttributeError: type object 'Reservation' has no attribute 'write'
Your individual Reservation objects don't have write attributes. You want to call the file's write method and use the object's data to populate the string.
with open("reservation.txt", "w") as file_: for reservation in reservationList: file_.write(reservation.passengerName + .... + "\n")
Side note, since you're using a context manager (with open() as _), you don't have to do
file.close(). The manager will do it for you.
file is a builtin so you don't want to overwrite that. You'll want to append a single underscore to the variable name to differentiate it as described in PEP8
Python error: AttributeError: type object 'MyClass' has no attribute , Remove the parenthesis from channel() . It is a field, not a function. Add parenthesis to MyClass so that the constructor is called. self.channel （AttributeError: type object 'TFLiteConverter' has no attribute 'from_keras_model'） LINYOUWEI0804 added the TFLiteConverter label Apr 22, 2020 tensorflow-butler bot assigned amahendrakar Apr 22, 2020
reservation is just a iterator to traverse through the list reservationList,it doesn't have any write functions defined . There are three ways to read data from a text file.
read() : Returns the read bytes in form of a string. Reads n bytes, if no n specified, reads the entire file. File_object.read([n]) readline() : Reads a line of the file and returns in form of a string.For specified n, reads at most n bytes. However, does not reads more than one line, even if n exceeds the length of the line. File_object.readline([n]) readlines() : Reads all the lines and return them as each line a string element in a list. File_object.readlines()
here is an example for opening a file and reading it:
file1 = open("myfile.txt","r") print(file1.read()) print(file1.readline())
AttributeError: type object 'Thing' has no attribute 'objects' · Issue #8 , Hi, I believe that I have configured my project according to your tutorial and demo project, but I am encountering an error: AttributeError: type # Convert to an Enum using the type as a constructor. Assumes a direct match is found. res = type_(value) # FIXME this is a hack to fix a deeper underlying issue. A refactor is due. elif is_collection(type): if is_mapping(type): k_type, v_type = type_.__args__ E AttributeError: type object 'dict' has no attribute 'args'`
Do it like this and make sure your last string in your list has a
\nso that it every time a different user put in information it writes in a new line:
with open("file_name.txt", 'a') as f: # "a" is used to append data to a file that is it # does not delete previously written data instead appends to it also f is the variable # which stores the file and could be anything for reservation in reservationList: f.write(reservation) print("done")
[SOLVED] AttributeError: type object 'Callable' has no attribute , Anyone seen this error with plone.restapi under Plone 5.2.1, Python 3? I keep getting this error: AttributeError: type object 'Callable' has no attribute '_abc_registry' when running from modin.pandas import pd. for version 0.5.2 of modin. I see various similar issues being closed like #619 or #540. They seem to suggest uninstalling the typing package which is not an option for me.
AttributeError: type object 'java.sql.Types' has no attribute, getClassFields(): AttributeError: type object 'java.sql.Types' has no attribute '__javaclass__'. This error can happen when connecting to Oracle, @BlackArbsCEO Are you talking about this warning:. 2019-04-11 08:33:15,790 WARNING services.py:1304 -- WARNING: The object store is using /tmp instead of /dev/shm because /dev/shm has only 33439985664 bytes available.
AttributeError: type object 'DataFrame' has no attribute 'from_items , cat_uniques =  for cat in cat_features: cat_uniques.append(len(train[cat].unique()) ', cat_features), ('unique_values', cat_uniques)]) Hi, I believe that I have configured my project according to your tutorial and demo project, but I am encountering an error: AttributeError: type object 'Thing' has no attribute 'objects' which references a call in my view to: Thing.obje
AttributeError: type object 'MyClass' has no attribute 'channel', In player.py when I have input import test , I am getting an error: AttributeError: type object 'MyClass' has no attribute 'channel' when I try to run AttributeError can be defined as an error that is raised when an attribute reference or assignment fails. For example, if we take a variable x we assined a value 10. In this process suppose we want to append another value to that variable. It’s not possible. Because the variable is a integer type it’s not support append method.
fileis not a built-in in Python 3.
- @juanpa.arrivillaga: probably PyCharm is used which is not clever enough to figure it out and completely relies on
- @lés No problem. If this or any other answer has solved your question please consider accepting it by clicking the check-mark. This indicates to the wider community that you've found a solution and gives some reputation to both the answerer and yourself. There is no obligation to do this.
- done! I have another question though, everytime i write a new reservation into the file, it writes multiple copies of the line i wrote. how can I fix this?
- @lés That's strange, and shouldn't happen. I recommend printing out the list before writing to make sure the contents are what you expect (no duplicates in the list which make it look like one line is getting written multiple times).
- You're opening in write mode, so you can't read from the file.
- thank you for the info. i understand file handling in python a little better now, thanks!
- Using "with" like done in the above method, you get better syntax and exceptions handling and is more pythonic
- it works. but everytime i write a new reservation into the file, it writes multiple copies of the line i wrote. any idea how to fix this?