统计文件的字母数并创建直方图

def count_letters(file_path):
    with open(file_path, 'r') as file:
        content = file.read()
        letters_count = sum(1 for char in content if char.isalpha())
        return letters_count

file_path = "path/to/your/file.txt"  # 替换为实际文件路径
letters_count = count_letters(file_path)
print("字母数:", letters_count)

import matplotlib.pyplot as plt

def create_histogram(file_path):
    with open(file_path, 'r') as file:
        content = file.read()
        letters_count = [0] * 26  # 初始化长度为26的列表，用于统计每个字母的频率
        for char in content:
            if char.isalpha():
                index = ord(char.lower()) - ord('a')  # 将字母转换为索引
                letters_count[index] += 1

    # 创建直方图
    x_labels = [chr(i) for i in range(ord('a'), ord('z')+1)]
    x = range(26)
    plt.bar(x, letters_count)
    plt.xlabel('字母')
    plt.ylabel('频率')
    plt.xticks(x, x_labels)
    plt.show()

file_path = "path/to/your/file.txt"  # 替换为实际文件路径
create_histogram(file_path)