如何在for循环中打印一个字符串但只打印一次？

Question

I am new to Python and wanted to implement a simple for loop:

phone_number = input("Please print phone number: ")
for i in phone_number:
    if i=="-":
        continue
print(i, end="")

so as you can see, the point of the program is to print the inputted phone number (111-222-3333) without "-" so the output is: 1112223333.

But I want the output to be "Your phone number is: 1112223333." I do not know how to implement the part that reads

print("Your phone number is: ")

I have tried to put this statement within the for loop but because of the end="" put in

print (i, end="")

I get a response that reads like

Your phone number is:
Your phone number is:1
Your phone number is:1
Your phone number is:1,...

I only want the statement to be printed once. What should I do???

Answer 1

Instead of iterating over the characters of the string and printing each character separately, we can remove the '-' by using str.replace(...) :

phone = '111-222-3333'
print(f"Your phone number is: {phone.replace('-','')}")

Answer 2

Using your for loop method, you can do the following to achieve your goal:

phone_number = input("Please print phone number: ")

print("Your phone number is: ", end="")
for i in phone_number:
    if i == "-":
        continue
    print(i, end="")
print()

Note how I've added an indent before the line print(i, end="") so that it is done once per loop, rather than after the for has finished.

I also moved the "your phone number is" part to before the loop, so that it is only printed once before any of the numbers are printed.

---

If you wanted, you could also invert the if condition to achieve the same result in 1 less line:

for i in phone_number:
    if i != "-":
        print(i, end="")
print()