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| ## basic
def hello_func():
pass
print(hello_func) # <function hello_func at 0x000001FC6BA4C430>
print(hello_func()) # None
## function without input
def hello_func():
return 'hello'
print(hello_func()) # hello
## function with input
def hello_func(greeting):
return '{} Function.'.format(greeting)
print(hello_func('Hi')) # Hi Function.
## default value
def hello_func(greeting, name='You'):
return '{}, {} Function.'.format(greeting, name)
print(hello_func('Hi')) # Hi, You Function.
## positional arguments, keyword arguments
## 1
def student_info(*args, **kwargs):
print(args)
print(kwargs)
student_info('Math', 'Art', name='John', age=22) # ('Math', 'Art')
# {'name': 'John', 'age': 22}
## 2
courses = ['Math', 'Art']
info = {'name': 'John', 'age': 22}
student_info(courses, info) # (['Math', 'Art'], {'name': 'John', 'age': 22})
# {}
## 3
courses = ['Math', 'Art']
info = {'name': 'John', 'age': 22}
student_info(*courses, **info) # ('Math', 'Art')
# {'name': 'John', 'age': 22}
## example print number of month days
month_days = [0,31,28,31,30,31,30,31,31,30,31,30,31]
def is_leap(year):
"""Return True for leap years, False for non-leap years."""
return (year % 4 == 0 and year % 100 != 0) or year % 400 == 0
def days_in_month(year, month):
"""Return number of days in that month in that year."""
if not 1 <= month <= 12:
return 'Invalid Month'
if month == 2 and is_leap(year):
return 29
return month_days[month]
print(days_in_month(2020,2)) # 29
print(days_in_month(2021,2)) # 28
|