Python讀取保存txt、csv、json文件方法

一. txt文件的讀取與保存

def text_save(filename, data):#filename爲寫入txt文件的路徑，data爲要寫入數據列表.
    file = open(filename,'a')
    for i in range(len(data)):
        s = str(data[i]).replace('[','').replace(']','')#去除[],這兩行按數據不同，可以選擇
        s = s.replace("'",'').replace(',','') +'\n'   #去除單引號，逗號，每行末尾追加換行符
        file.write(s)
    file.close()
    print("保存txt文件成功")

# 讀取txt文件
with open("Dpreci.txt") as f:
    line = f.readlines()
Dpreci = []
for line in line:
    Dpreci.append(float(line))
print('讀取txt成功')

二. csv文件的讀取與保存

def data_write_csv(file_name, datas):#file_name爲寫入CSV文件的路徑，datas爲要寫入數據列表
     file_csv = codecs.open(file_name,'w+','utf-8')
     writer = csv.writer(file_csv, delimiter=' ', quotechar=' ', quoting=csv.QUOTE_MINIMAL)
     for data in datas:
         writer.writerow(str(data))
     print("保存csv文件成功")

三. json文件的讀取

path_json = path + name + '.json'
    with open(path_json, 'r') as load_f:
        load_dict = json.load(load_f)