如何解决如何消除输入和标点符号之间的空格?
What is your name? Amanda
How old are you? 15
Hello Amanda! You were born in 2005.
但我在标点符号前总是有空格:
Hello Amanda ! You were born in 2005 .
代码如下:
# User Input
usr_name = input('What is your name?')
usr_age = int(input('How old are you?'))
# Year Born Calculation
year_born = 2020 - usr_age
# Final Output
print('Hello',usr_name,'!','You were born in',year_born,'.')
谢谢!
解决方法
这是因为从技术上讲,Python 中的 print
语句在每次连接字符串时都会留下一个空格。这是该“方法”的默认设置。
大多数情况下,最好使用新的 Python 格式字符串。不过,您必须使用 Python 3.6+ 版。 Python 格式的字符串也称为“f-strings”。
print(f"Hello {usr_name}! You were born in {year_born}.")
使用 .format
也可以解决您的问题。这个需要 Python 3.0 及更高版本。
print("Hello {}! You were born in {}.".format(usr_name,year_born))
进一步阅读:Python's docs。
,您可以尝试将实际字符串连接作为另一种选择:
# User Input
usr_name = input('What is your name?')
usr_age = int(input('How old are you?'))
# Year Born Calculation
year_born = 2020 - usr_age
# Final Output
answer = 'Hello ' + usr_name + '! ' + 'You were born in ' + str(year_born) + '.'
print(answer)
,
默认情况下,print()
语句在其参数之间插入一个空格。要覆盖此功能,您可以使用 sep=''
参数:
print('Hello ',usr_name,'! ','You were born in ',year_born,'.',sep='')
或者您可以完全使用另一种方法:字符串集中(一个很好的实践,前一种方法仅适用于 print
语句)。
print('Hello ' + usr_name + '! ' + 'You were born in ' + year_born + '.')
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