查找所有列组合的所有因子组合的频率

import pandas as pd
from itertools import combinations

# 示例数据集
data = {
    'A': ['a', 'b', 'a', 'c'],
    'B': [1, 2, 1, 3],
    'C': ['x', 'y', 'x', 'z']
}
df = pd.DataFrame(data)

# 查找所有列组合的所有因子组合的频率
def find_factor_combinations(df):
    columns = df.columns
    all_combinations = []
    
    for r in range(1, len(columns) + 1):
        for combo in combinations(columns, r):
            all_combinations.append(combo)
    
    frequencies = {}
    for combo in all_combinations:
        freq = df.groupby(list(combo)).size().reset_index(name='Frequency')
        frequencies[combo] = freq
    
    return frequencies

# 执行函数并打印结果
result = find_factor_combinations(df)
for combo, freq in result.items():
    print(f"Combination: {combo}")
    print(freq)
    print("\n")