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Python Pandas Series.append()
Pandas系列是一个带有轴标签的一维ndarray。标签不需要是唯一的,但必须是一个可散列的类型。该对象支持基于整数和标签的索引,并提供了大量的方法来执行涉及索引的操作。 Pandas Series.append()函数用于连接两个或多个系列对象。 语法: Series.append(to_append, ignore_index=False, verify_integrity=False) 参数: to_append :系列或系列的列表/tuple。 ignore_index : 如果为真,不使用索引标签。 verify_integrity : 如果为真,在创建有重复的索引时引发异常。 返回 : 附注:系列 示例#1:使用Series.append()函数将传递的系列对象追加到该系列对象的末尾。 # importing pandas as pd import pandas as pd # Creating the first Series sr1 = pd.Series(['New York', 'Chicago', 'Toronto', 'Lisbon', 'Rio']) # Create the first Index index_1 = ['City 1', 'City 2', 'City 3', 'City 4', 'City 5'] # set the index of first series sr1.index = index_1 # Creating the second Series sr2 = pd.Series(['Chicage', 'Shanghai', 'Beijing', 'Jakarta', 'Seoul']) # Create the second Index index_2 = ['City 6', 'City 7', 'City 8', 'City 9', 'City 10'] # set the index of second series sr2.index = index_2 # Print the first series print(sr1) # Print the second series print(sr2)输出 : City 1 New York City 2 Chicago City 3 Toronto City 4 Lisbon City 5 Rio dtype: object City 6 Chicage City 7 Shanghai City 8 Beijing City 9 Jakarta City 10 Seoul dtype: object现在我们将使用Series.append()函数将sr2追加到sr1系列的末尾。 # append sr2 at the end of sr1 result = sr1.append(sr2) # Print the result print(result)输出 : City 1 New York City 2 Chicago City 3 Toronto City 4 Lisbon City 5 Rio City 6 Chicage City 7 Shanghai City 8 Beijing City 9 Jakarta City 10 Seoul dtype: object正如我们在输出中看到的,Series.append()函数已经成功地将sr2对象附加到sr1对象的末尾。 示例#2:使用Series.append()函数将传递的系列对象追加到这个系列对象的末尾。忽略这两个系列对象的原始索引。 # importing pandas as pd import pandas as pd # Creating the first Series sr1 = pd.Series(['New York', 'Chicago', 'Toronto', 'Lisbon', 'Rio']) # Create the first Index index_1 = ['City 1', 'City 2', 'City 3', 'City 4', 'City 5'] # set the index of first series sr1.index = index_1 # Creating the second Series sr2 = pd.Series(['Chicage', 'Shanghai', 'Beijing', 'Jakarta', 'Seoul']) # Create the second Index index_2 = ['City 6', 'City 7', 'City 8', 'City 9', 'City 10'] # set the index of second series sr2.index = index_2 # Print the first series print(sr1) # Print the second series print(sr2)输出 : City 1 New York City 2 Chicago City 3 Toronto City 4 Lisbon City 5 Rio dtype: object City 6 Chicage City 7 Shanghai City 8 Beijing City 9 Jakarta City 10 Seoul dtype: object现在我们将使用Series.append()函数将sr2追加到sr1系列的末尾。我们将忽略给定系列对象的索引。 # append sr2 at the end of sr1 # ignore the index result = sr1.append(sr2, ignore_index = True) # Print the result print(result)输出 : 0 New York 1 Chicago 2 Toronto 3 Lisbon 4 Rio 5 Chicage 6 Shanghai 7 Beijing 8 Jakarta 9 Seoul dtype: object正如我们在输出中看到的,Series.append()函数已经成功地将sr2对象追加到sr1对象的末尾,并且它还忽略了索引。 |
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