如何循环打印输出

Question

问题已解决，下面的解决方案

Answer 1

下面的代码将使用您提供的代码将随机字符串输出到CSV文件。

import csv
import uuid

def my_random_string(string_length=12):
    """Returns a random string of length string_length."""
    random = str(uuid.uuid4()) # Convert UUID format to a Python string.
    random = random.upper() # Make all characters uppercase.
    random = random.replace("-","") # Remove the UUID '-'.
    return random[0:string_length] # Return the random string.

def random_string_to_csv(file_name, column_header, num_rows):
    num_cols = len(column_header)
    with open(file_name, mode='w', newline = '') as f:
        rand_string_writer = csv.writer(f, delimiter=',', quotechar='"', quoting=csv.QUOTE_ALL)
        rand_string_writer.writerow(column_header)
        for i in range(num_rows):
            row = [my_random_string() for j in range(num_cols)]
            rand_string_writer.writerow(row)

column_header = ['col1', 'col2', 'col3', 'col4']
num_rows = 5
random_string_to_csv('test.csv', column_header, num_rows)

CSV文件通常具有列标题，因此我将其包含在代码示例中。您可以轻松地更改函数定义以排除列标题，并在调用函数时显式定义列数，如下所示：

def random_string_to_csv(file_name, num_cols, num_rows):
    with open(file_name, mode='w', newline = '') as f:
        rand_string_writer = csv.writer(f, delimiter=',', quotechar='"', quoting=csv.QUOTE_ALL)
        for i in range(num_rows):
            row = [my_random_string() for j in range(num_cols)]
            rand_string_writer.writerow(row)