Python中print()函数end=的含义及<与>的区别是什么？

Let’s kick things off with the end= parameter in Python’s built-in print() function. By default, every time you call print(), it automatically adds a newline character ('\n') at the end of your output. That’s why consecutive print() statements show up on separate lines without you having to do anything extra.

The end= parameter lets you override this default behavior—you can specify exactly what character(s) you want to append instead of the newline. Here are some practical examples to make it click:

• If you want to print multiple items on the same line separated by a space:

  print("Hello", end=" ")
  print("World!")
  # Output: Hello World!
  

• If you want to end with a custom symbol or phrase:

  print("Python is awesome", end="!!!\n")
  # Output: Python is awesome!!!
  

• You can even use an empty string to skip any trailing character entirely:

  print("No newline here", end="")
  print("See? We're on the same line.")
  # Output: No newline hereSee? We're on the same line.
  

Next up, the < and > operators are core to comparing values in Python, and their roles are straightforward but important to get right:

• The < operator checks if the value on the left is less than the value on the right. It returns True if this condition holds, otherwise False.
• The > operator checks if the value on the left is greater than the value on the right. Again, it returns a boolean (True/False) based on whether the condition is met.

Key Notes & Examples: #

1. Numeric Comparisons: Works exactly like you’d expect with integers, floats, and other numeric types:

   print(7 < 10)  # Output: True
   print(15 > 20) # Output: False
   print(3.14 > 2.71) # Output: True
   

2. String Comparisons: Python compares strings lexicographically (based on Unicode code points of each character). It checks character by character from left to right:

   print("apple" < "banana") # Output: True (since 'a' has a lower Unicode value than 'b')
   print("zebra" > "ant")    # Output: True ('z' has a higher value than 'a')
   

3. Type Restrictions: In Python 3, you can’t compare values of incompatible types (like a string and an integer) directly—this will throw a TypeError. Unlike Python 2, which allowed this (with confusing results), Python 3 enforces type consistency here.

内容的提问来源于stack exchange，提问作者user9310111