Python摄氏度转华氏度代码出现SyntaxError语法错误求助

Let's walk through the issues in your code and fix them one by one:

1. Missing Parentheses in Function Definition #

The first syntax error comes from how you defined your function:

def celcius_to_fahrenheit :

In Python, function names must be followed by parentheses (even if the function takes no arguments). This is a mandatory part of the function definition syntax—omitting the parentheses triggers the SyntaxError you're seeing.

2. No Parameter Passed to the Function #

Your function tries to use a variable celcius, but this variable is defined outside the function. While global variables can be accessed inside functions, this is bad practice (it makes your code harder to reuse and debug). Instead, you should pass the Celsius value as a parameter directly to the function.

3. Not Calling the Function Correctly #

Your final line print(celcius_to_fahrenheit) only prints the function object itself, not the result of running the function. To execute the function and get its return value, you need to add parentheses and pass the required argument.

Corrected Code #

def celcius_to_fahrenheit(celcius):
    fahr = (float(celcius) * 1.8) + 32
    return fahr

# Get input from the user
celcius_input = input("Enter Degrees Celcius:")
# Call the function and print the result
print(celcius_to_fahrenheit(celcius_input))

Key Changes Explained: #

• Added parentheses and a parameter celcius to the function definition, so it can accept the value we want to convert
• Renamed the input variable to celcius_input to avoid confusion with the function parameter (a small readability improvement)
• Added parentheses and passed celcius_input when calling celcius_to_fahrenheit, so the function runs and returns the converted Fahrenheit value

内容的提问来源于stack exchange，提问作者Zwelithini Simela