Python/dictionaries: Difference between revisions
(Created page with "= Dictionaries in Python = == How to read/write dictionaries? == <source lang="python"> d = dict() # or d = {} # Key : Value structure d = { 'software' : 10 } # Read a v...") |
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= | = How to read/write dictionaries? = | ||
<syntaxhighlight lang="python"> | |||
< | |||
d = dict() | d = dict() | ||
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print(f'{word} is not in the dictionary') | print(f'{word} is not in the dictionary') | ||
</ | </syntaxhighlight> | ||
= Sort a dictionary = | |||
< | <syntaxhighlight lang="python"> | ||
keys = [] | keys = [] | ||
# key : value | # key : value | ||
for key, value in d.items(): | for key, value in d.items(): | ||
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print(f'{key} is here so many times:', d[key]) | print(f'{key} is here so many times:', d[key]) | ||
</ | </syntaxhighlight> | ||
[[Category:Python]] | |||
Latest revision as of 10:07, 28 June 2023
How to read/write dictionaries?
d = dict()
# or
d = {}
# Key : Value structure
d = { 'software' : 10 }
# Read a value from the dictionary
print(d['software'])
# 10
# Add a new key to the dictionary
d['language'] = 6
word = 'hello'
if word in d:
print(f'{word} is in the dictionary')
else:
print(f'{word} is not in the dictionary')
Sort a dictionary
keys = []
# key : value
for key, value in d.items():
keys.append(key)
keys.sort()
print(keys)
for key in keys:
print(f'{key} is here so many times:', d[key])