Kristian Rother at 20:03, 5 February 2013

2013-02-05T20:03:19Z

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{{Cat|Python Commands}}
{{Python Links}}

== Accessing individual characters ==
Using square brackets, any character of a string can be accessed. The first character has the index 0.

<source lang="python">
s = 'Manipulating Strings'
print s[0] # first character
print s[3]
print s[-1] # last character
print s[-2] # second last
</source>

== Creating substrings ==
Substrings can be formed by applying square brackets with two numbers inside separated by a colon. The second number is not included in the substring itself.

<source lang="python">
s = 'Manipulating Strings'
print s[1:6] # 'anipu'
Print s[9:13] # 'ing '
print s[0:2] # 'Ma'
print s[:3]
# 'Man'
print s[-4:] # 'ings'
</source>

== Length of strings ==
Is returned as an integer by the len() function.

<source lang="python">
print len('Manipulating Strings')
</source>

== String functions ==
There is a number of functions that can be used on every string variable.

<source lang="python">
s = 'Manipulating Strings '
</source>

===== Changing case: =====
<source lang="python">
s.upper()

s.lower()
</source>

===== Removing whitespace at both ends: =====
<source lang="python">
s.strip()
</source>

===== Cutting a string into columns: =====
<source lang="python">
s.split(' ')
</source>

===== Searching for substrings: =====
<source lang="python">
print s.find('ing')
</source>

===== Replacing substrings: =====
<source lang="python">
print s.replace('Strings','text')
</source>

===== Removing whitespace at both ends: =====
<source lang="python">
s.startswith('Man')

s.endswith('ings')
</source>

Strings - Revision history

Kristian Rother at 20:03, 5 February 2013