2019-11-23

print('0123456789'[::2])
print('0123456789'[::3])
print('0123456789'[2:8:2])
print('0123456789'[9::-2])
print('0123456789'[::-2])
print('0123456789'[-1:-7:-2])


a = True
print(type(a))



if None: 
    print(true)
else:
    print(False)



if 0: 
    print(true)
else: 
    print(False)
    
if 0.0:
    print(True)
else:
    print(False)
    
if 0+0j:
    print(True)
else:
    print(False)
    
if '':
    print(True)
else:
    print(False)
    
    b = 3
    if b:
        print(True)
        
if '\0':
    print(True)
else :
    print(False)
    
    
if ' ':
    print(True)
else :
    print(False)
    
    
print(bool(0))

print(bool(10))



print(type(120))
print(type(2147483648))
print(type(3.141592))
print(type(1.23456e3))
print(type('hello'))
print(type("HelloWorld"))
print(type(True))
print(type(False))

print(int(3.14))
print(int(3.6))
print(int(True))
print(int(False))
print(int('12345'))

print(float(100))
print(float(True))
print(float(False))

print(float('3.141592'))
print(float(314))