Python Casting

Last modified on: October 19, 2024

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<h3>Python Casting Overview</h3>
<p>Casting in Python refers to converting one data type into another. This is often necessary when performing operations that involve different data types. Python provides several built-in functions to facilitate casting.</p>
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<p><strong>Integer Casting (<code>int()</code>)</strong>: Converts a value to an integer. If the value is a float, it truncates the decimal part.</p>
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<pre class="language-python"><code>x = int(3.7)  # x will be 3
y = int("10")  # y will be 10
</code></pre>
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<p><strong>Float Casting (<code>float()</code>)</strong>: Converts a value to a float. It can take integers or strings that represent numbers.</p>
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<pre class="language-python"><code>a = float(5)    # a will be 5.0
b = float("3.14")  # b will be 3.14
</code></pre>
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<p><strong>String Casting (<code>str()</code>)</strong>: Converts a value to a string, which can be useful for concatenation or displaying values.</p>
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<pre class="language-python"><code>name = str(100)  # name will be "100"
greeting = "Hello, " + str("World!")  # "Hello, World!"
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<p><strong>Complex Casting (<code>complex()</code>)</strong>: Converts a value to a complex number, where you can specify the real and imaginary parts.</p>
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<pre class="language-python"><code>c = complex(1, 2)  # c will be (1+2j)
d = complex(3.5)   # d will be (3.5+0j)
</code></pre>
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<h3>Python Casting Example</h3>
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<pre class="language-python"><code># Integer Casting
num1 = int(4.9)      # Converts float to int
num2 = int("123")    # Converts string to int

# Float Casting
float_num = float(10)   # Converts int to float
string_float = float("2.718")  # Converts string to float

# String Casting
num_str = str(42)      # Converts int to string
float_str = str(3.14)  # Converts float to string

# Complex Casting
complex_num = complex(2, 3)  # Converts to complex (2+3j)

# Display results
print(f"Integer Casting: {num1}, {num2}")
print(f"Float Casting: {float_num}, {string_float}")
print(f"String Casting: {num_str}, {float_str}")
print(f"Complex Casting: {complex_num}")
</code></pre>
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<h3>&nbsp;</h3>
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