python help with subdirectorys

[mizzousoccerfan]

this is my code that we have for my homework and i cant figure out how to fix my error message

 

# Imports

from os import getcwd, chdir, path, mkdir

#add import for randint function

#add import for stdev function from statistics library

 

 

def get_inputs():

    '''Gets username and how many integers to generate input by the

    user. Returns both to main.'''

 

    username = input('Enter username: ')

 

    how_many = -1

    while (how_many < 100) or (how_many > 1000):

        how_many = int(input('Enter a number from 100 to 1000: '))

 

    return username, how_many

 

 

def create_subdir(subdir):

    '''Create a subdirectory. Does not return a value.

    subdir: a string representation of the subdirectory path.'''

    #Hint: see 'navigating directories examples.py' in Week 7 folder

    

    # if the path to subdir doesn't exist

        #create the subdirectory

    # otherwise, print message that subdir already exists

 

 

def write_rands(how_many, lower, upper, filename):

    '''Write random integers to a file. Does not return a value.

    how_many: the number of integers to write

    lower: lower bound for randint

    upper: upper bound for randint

    filename: file integers are written to'''

    outfile = open(filename, 'w')  # opens file for write

 

    #Hint: see 'write numbers to file.py' in Week 7 folder

 

 

def read_rands(filename):

    '''Read random integers from a file into a list. Returns a list.

    filename: a string variable naming the file to read from'''

    intlst = []  # initalize as empty list

 

    #Hint: see 'sum numbers from a file.py' in Week 7 folder

 

    return intlst

 

 

def mean(intlst):

    '''Calculate and return the mean.

    intlst: a list of integers'''

    #initialize accumulator variable

 

    #iterate through each number in intlst

        #add it to accumulator variable

 

    #get length of intlst and convert to a float; then use

    #to calculate the average

    

    return average

 

 

def median(intlst):

    '''Calculate and return the median. Copies intlst to a new list

    so that it is not reordered by .sort()

    intlst: a list of integers'''

    # Create a new copy of intlst to avoid side effects

    # because .sort() mutates the list

    sortlst = intlst[:]

 

    #sort sortlst with the built-in list sort function

    

 

    # Get middle of list

    middle = len(sortlst) // 2  #integer division to get middle of list

 

    if len(sortlst) % 2 == 0:  # List has even number of elements

        # This puts two 'middle' elements into a new list

        middlelst = [sortlst[middle-1], sortlst[middle]]

 

        #add call to your mean() function to calculate

        #the average of middlelst

        

    else:  # List has odd number of elements

        calc_median = sortlst[middle]

 

    return calc_median

 

 

# Can't use the name range, that's a built-in function

def myrange(intlst):

    '''Calculate and return the range.

    intlst: a list of integers'''

    #get min of intlist by searching it for the smallest element

 

    #get max of intlist by searching for largest element

 

    #calculate range, which is the max element minus the min element

 

    return calc_range

    

 

def std_dev(intlst):

    '''Calculate and return the standard deviation of intlist

    using built-in python function stdev().

    intlst: a list of integers'''

    # Use stdev() to calculate standard deviation

 

    return calc_stdev

    

 

def print_results(calc_mean, calc_median, calc_range, calc_stdev):

    '''Prints the results. Does not return a value.

    calc_mean: the calculated mean

    calc_median: the calculated median

    calc_range: the calculated range

    calc_stdev: the calculated standard deviation'''

 

 

 

def main():

    # Initialize constants and variables

    filename = 'stats.txt'

    lower = 27

    upper = 53

 

    # Request inputs

    username, how_many = get_inputs()

 

    # Create the subdirectory

    #assign a string to subdir variable that represents a path name that is

    #the subdirectory to create. Hint: see 'navigating directories examples.py'

    #in Week 7 folder

    create_subdir(subdir)

 

    # Change to the created subdirectory (this must be in main, not a function)

    ### add one python statement to change the directory

    print('current directory', getcwd())

 

    # Write random integers to file

    write_rands(how_many, lower, upper, filename)

 

    # Read random integers and assign to variable intlst

    #add function call to read_rands

 

    #########################################################

    #

    # For testing mean, median, myrange, and std_dev

    # functions. Comment out after testing.

    #

    intlst = [1, 2, 3, 4]

    #########################################################

 

    # Calculations

    calc_mean = mean(intlst)

    calc_median = median(intlst)

    #add function call to myrange

    #add function call to std_dev

 

    # Output results

    print_results(calc_mean, calc_median, calc_range, calc_stdev)

 

 

main()

 

 

 

thank you for your help

[madknight3]

Please use code tags and state what your error message/problem is.

 

Is it to help you figure out how to implement create_subdir(subdir)? If so the comments are already telling you what to do, and you seem to have some example code you can reference.