python中sample函数的介绍与使用

from random import randint, sample
date = [randint(10,20) for _ in range(10)]
c = sample(date, 5)
print(c)

# 输出：[12, 17, 10, 12, 17]

import random
mylist = ["apple", "banana", "cherry"]
print(random.sample(mylist, k=2))

import pandas as pd
#创建DataFrame数据
info = pd.DataFrame({'name': ['李四', '王五', '小贝', '虞姬'],
     'age': [18, 19, 20, 18],
     'sex': ['男', '男', '女','女' ],
     'class': ['5班', '4班', '5班','3班' ]})
#默认随机选择两行
print(info.sample(n=2))

import pandas as pd
#创建DataFrame数据
info = pd.DataFrame({'name': ['李四', '王五', '小贝', '虞姬'],
     'age': [18, 19, 20, 18],
     'sex': ['男', '男', '女','女' ],
     'class': ['5班', '4班', '5班','3班' ]})
#随机选择两列
print(info.sample(n=2,axis=1))