The plus operator is a language-defined operation, commonly performing numeric addition, string concatenation, or collection combination according to operand types.
The + operator joins two strings into one larger string. In Python, it can also appear alongside other operators that act differently on strings than on numbers. section 4.3.4
Join text fragments
first = 'This is a '
second = 'sentence.'
sentence = first + second
print(sentence)
# This is a sentence. section 4.3.4
>>> first = 'This is a '
>>> second = 'sentence.'
>>> sentence = first + second #1
>>> print(sentence)
This is a sentence.
>>> print('-=' * 5) #2
-=-=-=-=-=
Compare + for joining strings with * for repeating a string a specified number of times. section 4.3.4
How Learn AI-Assisted Python Programming, Second Edition covers it
How deep it goes
Demonstrates string concatenation and contrasts repetition without developing numeric behavior or implementation internals.
Examples
Uses sentence fragments and '-=' repeated five times as interactive Python examples.
What it assumes
Assumes a baseline of Python knowledge and encourages testing to check AI-provided claims.
What you can do after
Apply it in Python to join strings and test operator behavior at the Python prompt.
How it connects
Connects string concatenation with string repetition and string methods such as replace.
The Well-Grounded Rubyist, Fourth EditionThe Array#+ method is a Ruby method that returns a new array containing the elements of its operand arrays without mutating the receiver.
bit shiftingcontrasts with · Bit shifting is a bitwise operation that moves the positions of an integer’s binary digits left or right by a specified count.
concatenationused by · Concatenation is the operation of combining values or ordered sequences into a single composite, typically preserving their order.
stringused by · A string is a programming-language value representing an ordered sequence of characters or character units as text.
pure functionkind of · A pure function is a function whose output is determined solely by its explicit inputs and whose evaluation has no externally observable side effects.
This explainer was generated by Manning's knowledge graph from the text of Learn AI-Assisted Python Programming, Second Edition. The section links point to the parts of the book it draws on.
