尽量使用写文本方式存储数据（pandas 和 file write效率对比）

import pandas as pd
import time
def pandasWrite():
    t0 = time.time()
    colname = [str(i) for i in range(550)]
    df = pd.DataFrame(columns=colname)
    for i in range(100):
        df.loc[len(df)] = dict(zip(colname, range(550)))
    t1 = time.time()
    df.to_csv("temp.csv")
    print("pandas 存储数据用时：", t1-t0)
    # print(df)
def fileWrite():
    t0 = time.time()
    colname = [str(i) for i in range(550)]
    with open("temp1.txt", 'w', encoding='utf-8') as f:
        f.write('\t'.join(x for x in colname))
        for i in range(100):
            f.write('\t'.join(str(x) for x in range(550))+'\n')
    t1 = time.time()
    print("写文本 存储数据用时：", t1-t0)
pandasWrite()
fileWrite()

pandas 存储数据用时： 4.545027494430542
写文本 存储数据用时： 0.03499293327331543