python读取csv文件并画频率分布直方图

可以使用以下代码来读取CSV文件并绘制频率分布直方图：

import os
import csv
import matplotlib.pyplot as plt

def read_csv(csv_file):
    '''读取CSV文件并返回指定列的数据'''
    with open(csv_file, encoding='utf-8') as fp:
        f_csv = csv.reader(fp, skipinitialspace=True)
        headers = next(f_csv)  # 跳过表头
        data = \[float(row\[1\]) for row in f_csv\]  # 获取第二列数据
    return data

def draw_hist(data):
    '''绘制频率分布直方图'''
    plt.hist(data, bins=None)
    plt.title('title')
    plt.xlabel('xlab')
    plt.ylabel('ylab')
    plt.show()

def main():
    csv_file = r'/xx/xx.csv'
    data = read_csv(csv_file)
    draw_hist(data)

if __name__ == '__main__':
    main()

这段代码使用了`csv`模块来读取CSV文件，并使用`matplotlib.pyplot`库来绘制直方图。`read_csv`函数读取CSV文件并返回指定列的数据，`draw_hist`函数绘制频率分布直方图。你可以根据需要修改函数中的标题、横轴标签和纵轴标签。记得将`csv_file`变量替换为你实际的CSV文件路径。
#### 引用[.reference_title]
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