Python中字符串列表的相互转换实际应用场景

string_data = "apple,orange,banana,grape"
list_data = string_data.split(",")
print(list_data)

string_data = "apple, orange, banana, grape"
list_data = [item.strip() for item in string_data.split(",")]
print(list_data)

string_data = "[1, 2, 3, 4, 5]"
list_data = eval(string_data)
print(list_data)

list_data = ["apple", "orange", "banana", "grape"]
string_data = ", ".join(list_data)
print(string_data)

list_data = ["apple", "orange", "banana", "grape"]
string_data = "{} and {} are fruits.".format(", ".join(list_data[:-1]), list_data[-1])
print(string_data)

user_input = input("请输入逗号分隔的标签：")

# 去除首尾空格并分割成列表
tag_list = [tag.strip() for tag in user_input.split(",") if tag.strip()]

print("转换后的标签列表：", tag_list)

with open("data.txt", "r") as file:
    lines = file.readlines()
# 逐行处理，将逗号分隔的字符串转换为列表
data_list = [line.strip().split(",") for line in lines]
print("从文件读取的数据列表：", data_list)

config_list = ["option1", "option2", "option3"]

# 将列表元素连接成字符串
config_string = "\n".join(config_list)

print("生成的配置文件字符串：\n", config_string)

from flask import Flask, request
app = Flask(__name__)
@app.route('/process_form', methods=['POST'])
def process_form():
    # 从表单中获取逗号分隔的选项字符串
    options_string = request.form['options']
    # 将选项字符串转换为列表
    options_list = [option.strip() for option in options_string.split(",") if option.strip()]
    # 进行后续处理...
    return "处理成功！选项列表：" + str(options_list)
if __name__ == '__main__':
    app.run(debug=True)