python学习日志str float int datetime格式转换
发布时间：2024/11/19 23:31:23
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数字转换为字符
num = 123
char = str(num)
print(char) # 输出: '123'
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字符串转换为float
s = "123.456"
f = float(s)
print(f)
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字符转数字
方法一：使用内置的int()函数
number_str = "123"
number = int(number_str)
print(number)
方法二：使用eval()函数
number_str = "123"
number = eval(number_str)
print(number)
方法三：使用math库中的math.floor()函数
import math
number_str = "123"
number = math.floor(float(number_str))
print(number)
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字符转日期
from datetime import datetime
date_str = '2023-04-01'
date_format = '%Y-%m-%d'
# 使用strptime转换
date_obj = datetime.strptime(date_str, date_format)
print(date_obj) # 输出: 2023-04-01 00:00:00
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# ISO字符转日期
date_object = isoparse("2024-11-19T23:24:15.6131472+08:00")
formatted_date=date_object.strftime("%Y-%m-%d %H:%M:%S")
转换后结果：2024-11-19 23:24:15
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