write codes in python replace (in your data structure) all city names with a unique name that contains the word "City" followed by a unique number. e.g. City1 City2 City100 City101 City102 ...

Certainly! Here's an example code in Python that replaces city names in a data structure with unique names containing the word "City" followed by a unique number:

data_structure = ['New York', 'London', 'Paris', 'Tokyo', 'Sydney']

counter = 1  # Initialize counter variable

for i in range(len(data_structure)):
    unique_name = f'City{counter}'  # Generate unique name
    data_structure[i] = unique_name  # Replace city name with unique name
    counter += 1  # Increment counter

# Print the updated data structure
for city in data_structure:
    print(city)

Output:

City1
City2
City3
City4
City5

In this example, the code iterates through the data structure, replaces each city name with a unique name generated using the counter variable, and increments the counter for the next unique name. Finally, it prints the updated data structure with the new city names.