Python语法点滴

1.判断字符为空

if not model_path:

2.显示当前脚本所在目录

import os

cur_path = os.path.dirname(os.path.realpath(__file__))
print(cur_path)

　

3.显示当前被调用脚本所在目录

import os

def getCurPath2():    
    cur_path = os.getcwd()    
    return cur_path

　

4.将文件名和路径分割开

import os

model_path,_ = os.path.split(os.path.realpath(__file__))

print(os.path.realpath(__file__)) # 路径 + 文件名
print(model_path) # 路径

5.组合路径，自动补全中间连接的“/”

import os

model_path,_ = os.path.split(os.path.realpath(__file__))
model_det1_path = os.path.join(model_path, 'det1.npy')

print(model_det1_path)

6.lambda定义函数

func=lambda x:x+1

print(func(1))
# 2