问Python -如何排除Sat。还有Sun。从几周开始

EN

import calendar

weekdays = 0
cal = calendar.Calendar()

for week in cal.monthdayscalendar(2018, 7):
    for i, day in enumerate(week):
        # Check if is a weekday and the day is from this month
        if i < 5 and day != 0:
            weekdays += 1

print weekdays

import calendar

year = int(input('Year: '))
month = int(input('Month: '))
day = int(input('Day: '))

full_wks = day / 7
extra_days = day % 7

first_day = calendar.weekday(year, month, 1)
if first_day >= 5:              # if month begins on a weekend
    weekend = 7 - first_day     # yields 1 if Sunday, 2 if Saturday
    extra_days -= weekend

weekdays = full_wks * 5 + extra_days

ordinal = lambda n: "{}{}".format(n, 'tsnrhtdd'[n%5*(n%100^15>4>n%10)::4])

print "{}/{} is the {} weekday in the month.".format(month, day, ordinal(weekdays))

Year: 2018
Month: 7
Day: 20
7/20 is the 15th weekday in the month.

import calendar

year = float(input('Year: '))
month = float(input('Month: '))
input_year = []
input_month = []

if year >= 1000 and year <=3000:
    input_year.append(year)
if month >= 1 and month <=12:
    input_month.append(month)

cal_format = calendar.TextCalendar(calendar.MONDAY)
result_cal = cal_format.formatmonth(int(input_year[0]), int(input_month[0]))

lines = result_cal.split("\n") # Split result_cal into a list of lines
title_line = lines[0] # Save first line, we want to edit this differently
title_line = "  " + title_line.strip() # Change the indentation of the title line


lines = lines[1:] # Now select lines below the first 
lines = [line[:3*5] for line in lines] # Only Keep first 15 characters or each
                                       # line to exclude weekends. (5 weekdays *
                                       # 3 chars per day)

lines = [line for line in lines if len(line.strip())] # Don't include empty lines
                                                      # happens if month starts
                                                      # on a weekend.

# prints out the result
print(title_line)
for line in lines:
    print(line)

# Next work out how many working days in month.
nums = "".join(lines[1:]).split(" ") # Three parts: first lines[1:] means this
                                     # only looks at the portion of the calendar
                                     # with numbers written on then. 2nd "".join()
                                     # joins the lines into a single string on 1 line
                                     # 3rd the .split(" ") splits the string based on spaces
                                     # unfortunatly 2 consecutive spaces result in an empty
                                     # string.

nums = [num for num in nums if len(num)] # Filters the empty string.
print(f"There are {len(nums)} working days in the month you selected") # Prints result
#(uses f-string, you may want to look them up, I find them to be very useful)