比较 Python 中的时间戳 – Pandas
为了比较时间戳，我们可以使用索引运算符，即方括号。首先，导入所需的库-
import pandas as pd
创建一个包含3列的DataFrame-
dataFrame = pd.DataFrame(
{
"Car": ["Audi", "Lexus", "Tesla", "Mercedes", "BMW"],
"Date_of_Purchase": [
pd.Timestamp("2021-06-10"),
pd.Timestamp("2021-07-11"),
pd.Timestamp("2021-06-25"),
pd.Timestamp("2021-06-29"),
pd.Timestamp("2021-03-20"),
],
"Date_of_Service": [
pd.Timestamp("2021-11-10"),
pd.Timestamp("2021-12-11"),
pd.Timestamp("2021-11-25"),
pd.Timestamp("2021-11-29"),
pd.Timestamp("2021-08-20"),
]
})现在让我们比较两个日期列中的一些时间戳-
timestamp1_diff = abs(dataFrame['Date_of_Purchase'][0]-dataFrame['Date_of_Service'][0]) timestamp2_diff = abs(dataFrame['Date_of_Purchase'][1]-dataFrame['Date_of_Service'][1])
比较所有时间戳-
timestamp_diff = abs(dataFrame['Date_of_Purchase']-dataFrame['Date_of_Service'])
示例
以下是完整的代码-
import pandas as pd
#createadataframewith3columns
dataFrame = pd.DataFrame(
{
"Car": ["Audi", "Lexus", "Tesla", "Mercedes", "BMW"],
"Date_of_Purchase": [
pd.Timestamp("2021-06-10"),
pd.Timestamp("2021-07-11"),
pd.Timestamp("2021-06-25"),
pd.Timestamp("2021-06-29"),
pd.Timestamp("2021-03-20"),
],
"Date_of_Service": [
pd.Timestamp("2021-11-10"),
pd.Timestamp("2021-12-11"),
pd.Timestamp("2021-11-25"),
pd.Timestamp("2021-11-29"),
pd.Timestamp("2021-08-20"),
]
})
print"DataFrame...\n", dataFrame
#comparespecifictimestamps
timestamp1_diff = abs(dataFrame['Date_of_Purchase'][0]-dataFrame['Date_of_Service'][0])
timestamp2_diff = abs(dataFrame['Date_of_Purchase'][1]-dataFrame['Date_of_Service'][1])
print"\nDifference between Car 1 Date of Purchase and Service \n",timestamp1_diff
print"\nDifference between Car 2 Date of Purchase and Service \n",timestamp2_diff
#comparealltimestampsbyfindingdifference
timestamp_diff = abs(dataFrame['Date_of_Purchase']-dataFrame['Date_of_Service'])
print"\nDifference between two Timestamps: \n",timestamp_diff输出结果这将产生以下输出-
DataFrame...
Car Date_of_Purchase Date_of_Service
0 Audi 2021-06-10 2021-11-10
1 Lexus 2021-07-11 2021-12-11
2 Tesla 2021-06-25 2021-11-25
3 Mercedes 2021-06-29 2021-11-29
4 BMW 2021-03-20 2021-08-20
Difference between Car 1 Date of Purchase and Service
153 days 00:00:00
Difference between Car 2 Date of Purchase and Service
153 days 00:00:00
Difference between two Timestamps:
0 153 days
1 153 days
2 153 days
3 153 days
4 153 days
dtype: timedelta64[ns]