Pythonのデータ型変換関数と使用例を徹底分析

num = 10.5
num_int = int(num)
print(num_int)  # 输出：10

str_num = "20"
str_num_int = int(str_num)
print(str_num_int)  # 输出：20

num_int = 10
num_float = float(num_int)
print(num_float)  # 输出：10.0

str_num = "3.14"
str_num_float = float(str_num)
print(str_num_float)  # 输出：3.14

num_int = 10
num_str = str(num_int)
print(num_str)  # 输出："10"

num_float = 3.14
num_str = str(num_float)
print(num_str)  # 输出："3.14"

num_int = 0
num_bool = bool(num_int)
print(num_bool)  # 输出：False

str_empty = ""
str_bool = bool(str_empty)
print(str_bool)  # 输出：False

str_nonempty = "nonempty"
str_bool = bool(str_nonempty)
print(str_bool)  # 输出：True

str_word = "hello"
str_list = list(str_word)
print(str_list)  # 输出：['h', 'e', 'l', 'l', 'o']

tuple_nums = (1, 2, 3)
tuple_list = list(tuple_nums)
print(tuple_list)  # 输出：[1, 2, 3]

list_nums = [1, 2, 3]
list_tuple = tuple(list_nums)
print(list_tuple)  # 输出：(1, 2, 3)

str_word = "hello"
str_tuple = tuple(str_word)
print(str_tuple)  # 输出：('h', 'e', 'l', 'l', 'o')

list_nums = [1, 2, 2, 3, 3, 3]
list_set = set(list_nums)
print(list_set)  # 输出：{1, 2, 3}

str_word = "hello"
str_set = set(str_word)
print(str_set)  # 输出：{'e', 'o', 'l', 'h'}