my_df = pd.DataFrame([["a", "a1"],["b", "b1"],["c", "a1"]], columns=["字符", "字符串"])
# 逐行判断,表格中某一列是否包含对应另一列的完整字符串内容
my_df.apply(lambda row: row.字符 in row.字符串, axis=1)
# 判断表格中某一列是否包含另一列的(任意行)的完整字符串内容
my_df.字符串.apply(lambda x: x in my_df.字符串.values) # apply默认对列操作axis=0