Python 我需要的参数是7个语句，我怎样才能改变它目前拥有的8个特定函数，并且仍然让程序工作？

这似乎是一个奇怪的要求，但您可以删除几个局部变量：

"""A program to read a CSV file of rainfalls and print the totals
   for each month.
"""

from os.path import isfile as is_valid_file

def filename():
    """get's the filename"""
    infile = input('Input csv file name? ')
    while not is_valid_file(infile):
        print('File does not exist.')
        infile = input('Input csv file name? ')
    return infile

def read_file(file):
    """reads the file"""
    datafile = open(file) 
    data = datafile.read().splitlines()
    datafile.close()
    return data

def rainfall_parameters(data):
    """organises data into month and num_days and returns a list of 
    (month, rainfall) tuples"""
    results = []
    for line in data:
        columns = line.split(',')
        month = int(columns[0])
        num_days = int(columns[1])        
        total = total_rainfall(columns, num_days)
        results.append((month, total))
    return results

def total_rainfall(columns, num_days):
    """gets the total rainfall"""
    total = 0
    for col in columns[2:2 + num_days]:
        total += float(col)
    return total

def print_results(results):
    """prints the monthly total rainfalls"""
    print('Monthly total rainfalls')
    for (month, total_rain) in results:
        print('Month {:2}: {:.1f}'.format(month, total_rain))    

def main():
    """Prompt the user to provide a csv file of rainfall data, process the 
       given file's data, and print the monthly rainfall totals. 
       The file is assumed to have the month number in column 1, the number 
       of days in the month in column 2, and the floating point rainfalls 
       (in mm) for that month in the remaining columns of the row.
    """
    global_file = filename()
    global_cols = read_file(global_file)
    global_results = rainfall_parameters(global_cols)
    print_results(global_results)
   
main()

---

7条语句或7列？7条语句。当前，每个函数都符合该条件，包括从“results=[]”到“returnresults”的8条语句。函数给出了正确的输出，因为它是当前编写的，这只是这个问题的pylint要求。是的，这不是一个正常的要求，它是教我们对一个混乱程序进行函数分解的一部分。不过，这就成功了，谢谢你！

def rainfall_parameters(data):
    """organises data into month and num_days and returns a list of 
    (month, rainfall) tuples"""
    results = []
    for line in data:
        columns = line.split(',')
        #month = int(columns[0])  # no longer needed
        #num_days = int(columns[1])  # no longer needed
        total = total_rainfall(columns, int(columns[1]))  # move num_days
        results.append((int(columns[0]), total))  # move month
    return results