String comparison is a common task in programming. In MicroPython, you can compare strings using the same comparison operators as you would in Python. This includes the “==” operator for equality, “!=” for inequality, “>” for greater than, “<” for less than, “>=” for greater than or equal to, and “<=” for less than or equal to.
It is important to note that when comparing strings, MicroPython compares the underlying Unicode code points of each character in the strings. This means that string comparison is case-sensitive, and that different characters with the same visual representation (such as accented characters or ligatures) may have different code points and therefore be considered different characters.
Here are some examples of string comparison in MicroPython:
# Equality
string1 = "Hello, world!"
string2 = "Hello, world!"
if string1 == string2:
print("The strings are equal.")
else:
print("The strings are not equal.")
# Inequality
string1 = "Hello, world!"
string2 = "Goodbye, world!"
if string1 != string2:
print("The strings are not equal.")
else:
print("The strings are equal.")
# Greater than
string1 = "apple"
string2 = "banana"
if string1 > string2:
print("The first string is greater than the second.")
else:
print("The first string is not greater than the second.")
# Less than
string1 = "apple"
string2 = "banana"
if string1 < string2:
print("The first string is less than the second.")
else:
print("The first string is not less than the second.")In the above examples, the output would be:
The strings are equal.
The strings are not equal.
The first string is not greater than the second.
The first string is less than the second.As mentioned earlier, string comparison in MicroPython is case-sensitive. This means that the strings “hello” and “Hello” would be considered different. If you want to perform case-insensitive string comparison, you can convert both strings to lowercase (or uppercase) before comparing them. Here is an example:
string1 = "Hello"
string2 = "hello"
if string1.lower() == string2.lower():
print("The strings are equal, ignoring case.")
else:
print("The strings are not equal, even ignoring case.")
In this example, the output would be “The strings are equal, ignoring case.”
Overall, string comparison in MicroPython is straightforward and follows the same principles as in Python. It is important to keep in mind the case-sensitivity of string comparison and to be aware of the differences in code points between different characters.
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