转换为整数int、

字符串str-->整数int

纯数字的字符串

s = '2024'
print(s)
n = int(s)
print(n)
print(type(s))
print(type(n))

浮点数flaot--》整数int

没毛病

s1 = 2.23
print(int(s1))

布尔型-->整数int

s2, s3 = True, False
print(int(s2), int(s3))

转换为浮点数float

str--->float

s = '324.6' # 有没有小数点都可以
print(float(s))

int--->float

n = 2024
print(float(n))
#boor-->flaot
print(float(s2), float(s3))

转换为布尔bool

str-->boor

s = 'aaa123'
print(bool(s))
s1 = ' '
print('*'*20)
print(bool(s1))

int-->bool

n = 0
print(bool(n))
#flost-->bool
f = 0.0
print(bool(f))

转换为字符串str

int-->str

n = 5
print(str(n))
print(type(str(n)))

float-->str

f = 5.3
print(str(f))
print(type(str(f)))

bool-->str

a = True

'True'

print(type(a))
print(str(a))
print(type(str(a)))

进制的转换

s = '1a'
print(int(s,16))