cluste

run.py

# False               def                 if                  raise
# None                del                 import              return
# True                elif                in                  try
# and                 else                is                  while
# as                  except              lambda              with
# assert              finally             nonlocal            yield
# break               for                 not
# class               from                or
# continue            global              pass
# https://www.programiz.com/python-programming/keyword-list


import datetime
number = 2
going = True
str1 = 'string'
a='\u4e2d\u6587'
print("---------------base type--------------------")
print(number,going,str1,a)

shoplist = ['apple', 'mango', 'carrot', 'banana']
mylist = shoplist[:]
del mylist[0]

dictdemo = {'qq': 'tencent', 'alipay': 'ali', 'linux': 'linus'}
print("qq is ", dictdemo['qq'])
del dictdemo['qq']

zoo = ('python', 'elephant', 'penguin')
new_zoo = 'monkey', 'camel', zoo

setdemo = set([1, 2, 3])

print('list',shoplist)
print('slice',mylist)
print('dict',dictdemo)
print('tuple',new_zoo)
print('set',setdemo)

print("13/2=", 13 / 2,"13//2=", 13 // 2,"13%2=", 13 % 2)
print("2<<=", 2 << 2,"11>>=", 11 >> 1,"5&3=", 5 & 3)
print("5|3=", 5 | 3,  "5~3=", ~5,"5<3", 5 < 3)

print("---------------flow----------------------")
running = True
while running:
    nowdate = datetime.datetime.now().hour
    if nowdate > 12:
        print('afternoon')
        running = False
    elif nowdate < 12:
        print('mornning')
        running = False
    else:
        print('noon')
        running = False
print("---------------function------------------")


def say(mes, times=1):
    print(mes * times)


say('hello')
say('world', 5)


def total(a=5, *numbers, **kw):
    '''Func can

    this is a test doc
    '''
    print('a', a)
    for single_item in numbers:
        print('single_item', single_item)

    for first, second in kw.items():
        print(first, second)


print(total(10, 1, 2, 3, Jack=1123, John=2231, Inge=1560))
print("-----------------file--------------------")


poem = '''test  word
'''
try:
    f = open('file.txt', 'w')
    f.write(poem)
except Exception as e:
    raise e
finally:
    f.close()


f = open('file.txt')
while True:
    line = f.readline()
    if len(line) == 0:
        break
    print(line, end = '')

f.close()

with open('file.txt', 'r') as f:
    word = f.read()
f.close()
print("-----------------lamba---------------------")

g = [x * x for x in range(1, 11)]

for n in g:
    print(n,end=' ')
print('')

l=(x for x in range(9))

while True:
    try:
        print(next(l),end=' ')
    except StopIteration:
        break

def fib(max):
    n, a, b = 0, 0, 1
    while n < max:
        yield b
        a, b = b, a + b
        n = n + 1
    return 'done'

for i in fib(6):
    print(i,end=' ')

print('')


print(list(map(str, [1, 2, 3, 4, 5, 6, 7, 8, 9])))

f = lambda x: x * x
print(f(5))

def lazy_sum(*args):
    def sum():
        ax = 0
        for n in args:
            ax = ax + n
        return ax
    return sum

print(lazy_sum(1,3,5,7))
print(lazy_sum(1,3,5,7)())


print("-----------------oop---------------------")
class Person:
    def __init__(self, name):
        self.name = name

    def say_hi(self):
        print('hello', self.name)
print()
p = Person('python')
p.say_hi()

class Animal(object):
    def run(self):
        print('Animal is running...')

class Dog(Animal):
    pass

class Cat(Animal):
    def run(self):
        print('cat is running')

dog1=Dog()
dog1.run()
cat1=Cat()
cat1.run()
print(isinstance(cat1,Animal))

class Robot:
    number = 0

    def __init__(self, name):
        self.name = name
        Robot.number += 1

    def die(self):
        print(self.name)
        Robot.number -= 1
        if Robot.number == 0:
            print(self.name)
        else:
            print(Robot.number)

    def say_hi(self):
        print('hi this  is',self.name)

    @classmethod
    def how_many(cls):
        print(cls.number)
    

droid = Robot("R2-D2")
droid.say_hi()
Robot.how_many()
droid1 = Robot("c-3PO")
droid1.say_hi()
Robot.how_many()
droid.die()
Robot.how_many()


if __name__ == '__main__':
    print('run by itself')
else:
    print('import by other')