20191123
123456789101112131415161718192021222324252627282930313233343536373839
a = "python"
print(a)
print(a[0])
print("python"[0])
print("python"[3])
print("python"[0:2])
print("python"[-6:-2])
print("python"[0:6])
print("python"[:])
print("python"[ : ])
b = 1234567890
print(b)
print('1234567890'[3:3:2])
print('1234567890'[1::2])
print('1234567890'[-10:-1])
'123456789'[::2]
'123456789'[::3]
'123456789'[::4]
a = True
print(type(a))
if None: print(True)
else: print(False)
if 0: print(True)
else: print(False)
b = 42
if b: print(True)
type(111)
type(3.24242424424)
type(2223)
type(True)
float(2288282)
Python
INFO