How do I fix "Method has no argument" on line def getmintemp():

Question

class FileIO:
    file_name = "F:\CalgaryWeather.csv"
    data = np.loadtxt(file_name, delimiter=',' , skiprows = 1, dtype = np.float)

class Date:
    year = FileIO.data[:,0]
    month = FileIO.data[:,1]

class TemperautureData:
    maxTemp = FileIO.data[:,2]
    minTemp = FileIO.data[:,3]
    snowFall = FileIO.data[:,4]

class WeatherAnalyzer:
    def getmintemp():
        array1 = [TemperautureData.minTemp]
        mini = np.amin(array1)
        return mini

def main():
    print(WeatherAnalyzer.getmintemp())

if __name__ == "__main__":
    main()

The program runs but it says there is a problem with def getmintemp(): saying Method had no argument pylint(no-method-argument)[17,5]

Answer 1

In Python, inside a class, methods are defined like that, with the 'self' argument: https://docs.python.org/3/tutorial/classes.html

class WeatherAnalyzer:
    def getmintemp(self):
        array1 = [TemperautureData.minTemp]
        mini = np.amin(array1)
        return mini

Answer 2

What you want is a static method:

class WeatherAnalyzer:

    @staticmethod
    def getmintemp():
        array1 = [TemperautureData.minTemp]
        mini = np.amin(array1)
        return mini