从pandas中的dataframe列中删除空间[duplicate]

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Removing space in dataframe python 2 answers

删除dataframe python 2中的空格

I am trying to remove spaces from a dataframe I have. The columns names look like below. I am trying to get the spaces between name out and replace it with "_" wherever present.

我试图从我拥有的数据框中删除空格。列名称如下所示。我试图获取名称之间的空格,并在任何地方用“_”替换它。

['join_date' 'fiscal_quarter' 'fiscal_year' 'primary_channel'
 'secondary_channel' 'customer_count' 'new_members' 'revisit_next_day'
 'revisit_14_day' 'demand_1yr' 'revisit_next_day_rate'
 'revisit_14_day_rate' 'demand_1yr_per_new_member' u'ch_Ad Network'
 u'ch_Affiliate' u'ch_Branded SEM' u'ch_DSP' u'ch_Daily Email'
 u'ch_Daily Messaging' u'ch_Direct' u'ch_Direct Publisher' u'ch_Email'
 u'ch_Feeds' u'ch_Native' u'ch_Non-Branded SEM' u'ch_Organic Search'
 u'ch_Paid Social' u'ch_Site' u'ch_Special Email' u'ch_Television'
 u'ch_Trigger Email' u'ch_UNMAPPED' u'ch_Unpaid Social' u'quarter_Q2'
 u'quarter_Q3' u'quarter_Q4']

1 个解决方案

#1

To remove white spaces:

要删除空格:

1) To remove white space everywhere:

1)去除任何地方的空白区域:

df.columns = df.columns.str.replace(' ', '')

2) To remove white space at the beginning of string:

2)删除字符串开头的空格:

df.columns = df.columns.str.lstrip()

3) To remove white space at the end of string:

3)删除字符串末尾的空格:

df.columns = df.columns.str.rstrip()

4) To remove white space at both ends:

4)去除两端的空白区域:

df.columns = df.columns.str.strip()

To replace white spaces with other characters (underscore for instance):

要用其他字符替换空格(例如下划线):

5) To replace white space everywhere

5)到处替换白色空间

df.columns = df.columns.str.replace(' ', '_')

6) To replace white space at the beginning:

6)在开头替换空格:

df.columns = df.columns.str.replace('^ +', '_')

7) To replace white space at the end:

7)最后替换白色空间:

df.columns = df.columns.str.replace(' +$', '_')

8) To replace white space at both ends:

8)替换两端的空白区域:

df.columns = df.columns.str.replace('^ +| +$', '_')

All above applies to a specific column as well, assume you have a column named col, then just do:

以上所有内容也适用于特定列,假设您有一个名为col的列,那么只需:

df[col] = df[col].str.strip()  # or .replace as above

#1

To remove white spaces: