[Python] Novice temperature conversion

Example -python temperature conversion achieved:

Temperature portray two different systems: degrees Celsius (Celsius) and ° F (Fahrenheit).

Please write programs to convert Fahrenheit to Celsius user input, or input conversion Celsius to Fahrenheit.

Conversion algorithm is as follows: (C indicates Celsius, F represents F)

         C = ( F - 32 ) / 1.8‪‬‪‬‪‬‪‬‪‬‮‬‪‬‫‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‫‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‫‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‭‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‭‬‫‬

         F = C * 1.8 + 32‪‬‪‬‪‬‪‬‪‬‮‬‪‬‫‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‫‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‫‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‭‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‭‬‫‬

Requirements are as follows:

(1) the case can be input and output ends degrees letters C, the temperature may be an integer or decimal, such as: 12.34C refers to degrees Celsius 12.34;

F (2) the case can be input and output ends with the letter F., The temperature may be an integer or decimal, such as: 87.65F refers to 87.65 degrees Fahrenheit;

When (3) the output of two decimal places, the input format error, system outputs: an input format error;

(4) using the input () to get the test case input, not to increase the prompt string

TempStr = input()
if TempStr[-1] in ['F','f']:
    C = (eval(TempStr[0:-1])-32)/1.8
    print("{:.2f}C".format(C))
elif TempStr[-1] in ['C','c']:
    F = eval(TempStr[0:-1])*1.8+32
    print("{:.2f}F".format(F))
else:
    print("输入格式错误")

to sum up:

1. Variable: variable assignment does not need to declare types. Variable types: Number figures, String "string", List [list], Dictionary {dictionary}, Tuple (tuple)

https://www.runoob.com/python/python-variable-types.html

2.format () function formatted output.

https://www.runoob.com/python/att-string-format.html

3.for cycle. Behind is traversed in sequence [String or List]

https://www.runoob.com/python3/python3-loop.html