Python 使用不相等(!=)计算浮点64或int64的频率
我知道有很多帖子,但这并不能解决我的问题 我知道数据框是这样的:Python 使用不相等(!=)计算浮点64或int64的频率,python,pandas,Python,Pandas,我知道有很多帖子,但这并不能解决我的问题 我知道数据框是这样的: df1 = [{"Customer Number": "AFIMBN01000BCA17030001177", "Account Name": "Sunarto","Debit/Credit Indicator" : "k","Money" : 100}, {"Customer Number": "AFIMBN01000BCA17030001177", "Account Name": "Sunarto","Debit/Cr
df1 = [{"Customer Number": "AFIMBN01000BCA17030001177", "Account Name": "Sunarto","Debit/Credit Indicator" : "k","Money" : 100},
{"Customer Number": "AFIMBN01000BCA17030001177", "Account Name": "Sunarto","Debit/Credit Indicator": "k","Money" : 200},
{"Customer Number": "AFIMBN01000BCA17030001177", "Account Name": "Sunarto","Debit/Credit Indicator" : "D", "Money" : 0}]
df1 = pd.DataFrame(df1)
df1
Account Name Customer Number Debit/Credit Indicator Money
Sunarto AFIMBN01000BCA17030001177 k 100
Sunarto AFIMBN01000BCA17030001177 k 200
Sunarto AFIMBN01000BCA17030001177 D 0
Account Name object
Customer Number object
Debit/Credit Indicator object
Money int64 (or let's say float64)
我想根据“钱”计算频率
如果钱是0,就不算了
我试过使用df1[“Money”]。value\u counts()
不起作用
df1.loc[df1["Money"] != 0, "Per item"] = df1["Money"].value_counts()
df1
Account Name Customer Number Debit/Credit Indicator Money Per item
Sunarto AFIMBN01000BCA17030001177 k 100 1
Sunarto AFIMBN01000BCA17030001177 k 200 NaN
Sunarto AFIMBN01000BCA17030001177 D 0 NaN
但我的期望是
Account Name Customer Number Debit/Credit Indicator Money Per item
Sunarto AFIMBN01000BCA17030001177 k 100 1
Sunarto AFIMBN01000BCA17030001177 k 200 1
Sunarto AFIMBN01000BCA17030001177 D 0 0
所以我的期望是,当我申请pivot时,我可以得到“钱”上有价值的物品
我的期望值
gdf = pd.pivot_table(df1, index = ["Account Name","Customer Number"],values = ["Money", "Per item"],aggfunc = np.sum)
gdf.head()
Money Per item
Account Name Customer Number
Sunarto AFIMBN01000BCA17030001177 300 2.0
您需要为每个条件分配
1
:
df1.loc[df1["Money"] != 0, "Per item"] = 1
或将布尔掩码转换为整数:
df1["Per item"] = (df1["Money"] != 0).astype(int)
另一个不带聚合的透视表的解决方案:
gdf = (df1.groupby(["Account Name","Customer Number"])['Money']
.agg([('Money','sum'), ('Per item', lambda x: x.ne(0).sum())]))
print (gdf)
Money Per item
Account Name Customer Number
Sunarto AFIMBN01000BCA17030001177 300 2
编辑:
我可以知道为什么我的代码不起作用吗
问题是带有计数器值的返回序列,但索引值是由原始序列的值创建的,这里是100200
。因此,索引不匹配并获取缺少的值。解决方案是使用:
但如果有多个复制值,则问题不在于分配1
而是计数器值并得到错误的输出,这里double200
值错误地返回4
值,而在于2
:
df1 = [{"Customer Number": "AFIMBN01000BCA17030001177", "Account Name": "Sunarto","Debit/Credit Indicator" : "k","Money" : 200},
{"Customer Number": "AFIMBN01000BCA17030001177", "Account Name": "Sunarto","Debit/Credit Indicator": "k","Money" : 200},
{"Customer Number": "AFIMBN01000BCA17030001177", "Account Name": "Sunarto","Debit/Credit Indicator" : "D", "Money" : 0}]
df1 = pd.DataFrame(df1)
df1.loc[df1["Money"] != 0, "Per item"] = df1["Money"].map(df1["Money"].value_counts())
print (df1)
Account Name Customer Number Debit/Credit Indicator Money \
0 Sunarto AFIMBN01000BCA17030001177 k 200
1 Sunarto AFIMBN01000BCA17030001177 k 200
2 Sunarto AFIMBN01000BCA17030001177 D 0
Per item
0 2.0
1 2.0
2 NaN
gdf = pd.pivot_table(df1, index = ["Account Name","Customer Number"],values = ["Money", "Per item"],aggfunc = np.sum)
print (gdf)
Money Per item
Account Name Customer Number
Sunarto AFIMBN01000BCA17030001177 400 4.0
天哪,谢谢你的解决,愚蠢的我呵呵…我能知道为什么我的代码不起作用吗?先生。。“lambda x:x.ne(0.sum()”的含义是什么?我不知道这个语句的功能for@charismabathara-当然,我解释。第一个ne
是-它在这里工作就像一样=
和sum
仅用于计数True
值,因为.ne(0)
返回True
和False
值。
df1 = [{"Customer Number": "AFIMBN01000BCA17030001177", "Account Name": "Sunarto","Debit/Credit Indicator" : "k","Money" : 200},
{"Customer Number": "AFIMBN01000BCA17030001177", "Account Name": "Sunarto","Debit/Credit Indicator": "k","Money" : 200},
{"Customer Number": "AFIMBN01000BCA17030001177", "Account Name": "Sunarto","Debit/Credit Indicator" : "D", "Money" : 0}]
df1 = pd.DataFrame(df1)
df1.loc[df1["Money"] != 0, "Per item"] = df1["Money"].map(df1["Money"].value_counts())
print (df1)
Account Name Customer Number Debit/Credit Indicator Money \
0 Sunarto AFIMBN01000BCA17030001177 k 200
1 Sunarto AFIMBN01000BCA17030001177 k 200
2 Sunarto AFIMBN01000BCA17030001177 D 0
Per item
0 2.0
1 2.0
2 NaN
gdf = pd.pivot_table(df1, index = ["Account Name","Customer Number"],values = ["Money", "Per item"],aggfunc = np.sum)
print (gdf)
Money Per item
Account Name Customer Number
Sunarto AFIMBN01000BCA17030001177 400 4.0