65 lines
1.1 KiB
Markdown
65 lines
1.1 KiB
Markdown
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# String Manipulation
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Shortcuts, cheatsheets, and sample codes that may be frequently used for strings.
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---
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How to remove every other letter from a string:
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```python
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>>> 'abcdefg'[::2]
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>'aceg'
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```
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---
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To remove all characters after a specific character/substring from a string, you must use the str.replace() method in Python 3.+:
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```python
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list_str = {'Abc.ex', 'Bcd.ex', 'cde.ex', 'def.jpg', 'efg.jpg'}
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new_set = {x.replace('.ex', '').replace('.jpg', '') for x in list_str}
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print(new_set)
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```
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output:
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```
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{'Bcd', 'Abc', 'cde', 'def', 'efg'}
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```
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Can also use str.removesuffix('suffix') method which will remove suffix if there is one, and if there isn't will return original word:
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```python
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text = 'Quickly'
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print(text.removesuffix('ly'))
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print(text.removesuffix('World'))
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```
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output:
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```
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Quick
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Quickly
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```
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the partition method was introduced in python 2.5 and can also be used to get rid of a section.
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```python
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text = 'text.com/yes/?/noandifwillthisbethere'
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head, sep, tail = text.partition('?')
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print(head)
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```
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output:
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```
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text.com/yes/
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```
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---
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