云学编程的第5天—【微软官方python入门教程 P11-P12笔记】2021-11-05 格式化字符串

原创于 2021-11-05 15:10:11 发布 · 114 阅读

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本文探讨了多种字符串格式化方法，包括使用加号连接、format函数、f-string以及百分比符号方法。作者特别提到了f-string的易读性和自文档化特性，并指出这种格式化方式在其他编程语言中也有类似实现。

P11 Custom string formatting

format strings——there are multiple ways that you can do the exact same types of string concatenation.

P12实操

first_name='liu'
last_name='ding yun'

output='hello ' + first_name + ' ' + last_name
output='hello,{}{}'.format(first_name,last_name)
output='hello,{0}{1}'.format(first_name,last_name)
output=f'hello,{first_name} {last_name}'
output='hello,%s %s'%(first_name,last_name)

print(output)

i really like that last string format with the little f at the very beginning there.⬇️ you'll also notice that there's a lot of other programming languages that have a very similar construct. I also really like the fact that it is self-documenting, because i can very clearly see......

first_name='liu'
last_name='ding yun'

# output='hello ' + first_name + ' ' + last_name
# output='hello,{}{}'.format(first_name,last_name)
# output='hello,{0}{1}'.format(first_name,last_name)
output=f'hello,{first_name} {last_name}'
# output='hello,%s %s'%(first_name,last_name)

print(output)