python常见打开文件的方式示例详解

open(file, mode,encoding)

f = open('test.txt', 'r', encoding='utf-8')
content = f.read()
f.close() 

open(file, mode, encoding)

with open("test.txt", "r", encoding="utf-8") as f:
    content = f.read() 
    print(content)

df = pd.read_csv(
    filepath_or_buffer='文件路径/URL',  
    sep=',',                         
    header=0,                        
    names=['列1', '列2', '列3'],      
    encoding='utf-8'                  
)

import pandas as pd
df = pd.read_csv(
    # 基础参数
    filepath_or_buffer='student_scores.csv',  
    encoding='utf-8',                         
    sep=',',                                 
)

np.loadtxt(fname, dtype=float, comments='#', delimiter=None, skiprows=0, usecols=None, unpack=False)

arr_loadtxt = np.loadtxt(
    fname='numpy_simple.csv',
    dtype={'names': ('学号', '数学', '语文'), 'formats': ('U6', 'int', 'int')},  # 自定义结构化类型
    delimiter=',',
)

PIL.Image.open(fp, mode='r', formats=None)

img = Image.open(
        fp='test_image.png',   
        mode='r',              
        formats=['PNG']        
    )