Often we will want to insert/inject variables into string eg. my_name = "Russ"

print("Hi " + my_name)

String Interpolation refers to formatting strings in various ways to permit injection.

Explorations of the .format() method/function and the f-strings (formatted string literals) newer in Python3.6.x plus



In [27]:

    
print('This is a String {}'.format('INSERTED'))









    



This is a String INSERTED



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print('This is an example of MultiIndex insertions {} {} {}'.format('INSERTION1', 'INSERTION2', 'INSERTION3'))









    



This is an example of MultiIndex insertions INSERTION1 INSERTION2 INSERTION3



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a = 'I1'
b = 'I2'
c = 'I3'



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print('This is me jumping the gun and testing a theory {} {} {}'.format(a, b, c))









    



This is me jumping the gun and testing a theory I1 I2 I3



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print('Now testing MultiIndexed Insertions without jumping the gun:' + 'The {2} {1} {0}'.format('fox', 'brown', 'quick'))









    



Now testing MultiIndexed Insertions without jumping the gun:The quick brown fox

Can also repeat an index eg. {0} {0} {0} - and use K2VP as below - cannot use numerical values (expressions and maloc rules).



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print('The {q} {g} {f}'.format(f='fox', q='quick', g='golden'))









    



The quick golden fox

Repeat can also be used with keys: {f} {f} {f}

Float formatting follows "{value:width.precision f}"



In [33]:

    
result = 12987/8921



In [34]:

    
result









    Out[34]:





1.4557785001681425



In [35]:

    
print('The result was {}'.format(result))









    



The result was 1.4557785001681425



In [36]:

    
print('The result was {r:1.6f}'.format(r=result))









    



The result was 1.455779

Formatted String literals AKA 'FString'.



In [37]:

    
name = 'Rusha'



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print(f'Hi, he said his name was {name} because he drinks too much caffeine and rushes around.')









    



Hi, he said his name was Rusha because he drinks too much caffeine and rushes around.



In [44]:

    
age = 3000
real_name = 'Russell'
hobbits = 'AI, Art and Coding among others.'



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print(f'HI, he said his name was {name} because he drinks a lot of caffeine and rushes about. I later found out after getting to know him, his real name is {real_name} and he is {age} years old and has a keen interest in {hobbits}')









    



HI, he said his name was Rusha because he drinks a lot of caffeine and rushes about. I later found out after getting to know him, his real name is Russell and he is 3000 years old and has a keen interest in AI, Art and Coding among others.



In [53]:

    
pi = u"\U0001D70B"



In [54]:

    
print(f'He also said he likes the idea of {pi}.')









    



He also said he likes the idea of 𝜋.



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