def is_straight是什么意思
时间: 2023-10-02 10:05:24 浏览: 36
`is_straight` 是一个函数名,它表示判断扑克牌是否是顺子的功能。函数名可以根据实际需要进行命名,这里选择了 `is_straight` 来表达函数的作用。
在 Python 中,使用 `def` 关键字来定义一个函数。`is_straight` 函数接受一个参数 `cards`,它是一个由扑克牌大小组成的列表。函数内部实现了判断扑克牌是否是顺子的逻辑,并返回一个布尔值,即 True 或 False。
你可以调用这个函数来判断一组扑克牌是否是顺子。如果返回值为 True,则表示是顺子;否则,表示不是顺子。
相关问题
d2l.plt.scatter()是什么函数
d2l.plt.scatter() 是 Deep Learning - The Straight Dope (D2L) 书中定义的一个函数,用于绘制散点图。它是基于 Matplotlib 库实现的,具有以下特点:
- 支持自定义点的颜色、大小、形状等属性。
- 支持添加标题、坐标轴标签等注释。
- 支持同时绘制多个散点图。
该函数的定义如下:
```python
def set_figsize(figsize=(3.5, 2.5)):
"""Set matplotlib figure size."""
use_svg_display()
d2l.plt.rcParams['figure.figsize'] = figsize
def use_svg_display():
"""Use svg format to display plot in jupyter."""
d2l.plt.rcParams['svg.fonttype'] = 'none'
def plot(X, Y=None, xlabel=None, ylabel=None, legend=None, xlim=None,
ylim=None, xscale='linear', yscale='linear', fmts=None,
figsize=(3.5, 2.5), axes=None):
"""Plot multiple lines."""
if legend is None:
legend = []
set_figsize(figsize)
axes = axes if axes else d2l.plt.gca()
# Return True if X (tensor or list) has more than 1 dimension
def has_one_dim(X):
if isinstance(X, np.ndarray) or isinstance(X, list):
return len(X.shape) == 1
else:
return len(X.size()) == 1
# Convert Y to list so that len(Y) is always defined
if Y is None:
Y = []
if not isinstance(Y, list):
Y = [Y]
if not isinstance(X, list):
X = [X] * len(Y)
if len(X) != len(Y):
X = X * len(Y)
# Format lines and points
if fmts is None:
fmts = ['-'] * len(X)
elif isinstance(fmts, str):
fmts = [fmts] * len(X)
# Plot
for x, y, fmt in zip(X, Y, fmts):
if has_one_dim(x):
x = np.arange(len(y)) + 1
axes.plot(x, y, fmt)
axes.set_xlabel(xlabel)
axes.set_ylabel(ylabel)
axes.set_xscale(xscale)
axes.set_yscale(yscale)
if xlim:
axes.set_xlim(xlim)
if ylim:
axes.set_ylim(ylim)
if legend:
axes.legend(legend)
axes.grid()
d2l.plt.show()
def show_images(imgs, num_rows, num_cols, scale=2):
"""Plot a list of images."""
figsize = (num_cols * scale, num_rows * scale)
_, axes = d2l.plt.subplots(num_rows, num_cols, figsize=figsize)
for i in range(num_rows):
for j in range(num_cols):
axes[i][j].imshow(imgs[i * num_cols + j])
axes[i][j].axes.get_xaxis().set_visible(False)
axes[i][j].axes.get_yaxis().set_visible(False)
return axes
def plot_learning_curves(train_acc, test_acc, train_loss, test_loss):
"""Plot the learning curves."""
d2l.plt.plot(train_acc, linestyle='-', color='blue', label='train accuracy')
d2l.plt.plot(test_acc, linestyle='--', color='red', label='test accuracy')
d2l.plt.xlabel('epochs')
d2l.plt.ylabel('accuracy')
d2l.plt.legend(loc='upper right')
d2l.plt.twinx()
d2l.plt.plot(train_loss, linestyle='-', color='green', label='train loss')
d2l.plt.plot(test_loss, linestyle='--', color='orange', label='test loss')
d2l.plt.ylabel('loss')
d2l.plt.legend(loc='upper left')
d2l.plt.show()
def use_svg_display():
"""Use svg format to display plot in jupyter."""
d2l.plt.rcParams['svg.fonttype'] = 'none'
def set_figsize(figsize=(3.5, 2.5)):
"""Set matplotlib figure size."""
use_svg_display()
d2l.plt.rcParams['figure.figsize'] = figsize
def plot(X, Y=None, xlabel=None, ylabel=None, legend=None, xlim=None,
ylim=None, xscale='linear', yscale='linear', fmts=None,
figsize=(3.5, 2.5), axes=None):
"""Plot multiple lines."""
if legend is None:
legend = []
set_figsize(figsize)
axes = axes if axes else d2l.plt.gca()
# Return True if X (tensor or list) has more than 1 dimension
def has_one_dim(X):
if isinstance(X, np.ndarray) or isinstance(X, list):
return len(X.shape) == 1
else:
return len(X.size()) == 1
# Convert Y to list so that len(Y) is always defined
if Y is None:
Y = []
if not isinstance(Y, list):
Y = [Y]
if not isinstance(X, list):
X = [X] * len(Y)
if len(X) != len(Y):
X = X * len(Y)
# Format lines and points
if fmts is None:
fmts = ['-'] * len(X)
elif isinstance(fmts, str):
fmts = [fmts] * len(X)
# Plot
for x, y, fmt in zip(X, Y, fmts):
if has_one_dim(x):
x = np.arange(len(y)) + 1
axes.plot(x, y, fmt)
axes.set_xlabel(xlabel)
axes.set_ylabel(ylabel)
axes.set_xscale(xscale)
axes.set_yscale(yscale)
if xlim:
axes.set_xlim(xlim)
if ylim:
axes.set_ylim(ylim)
if legend:
axes.legend(legend)
axes.grid()
d2l.plt.show()
def show_images(imgs, num_rows, num_cols, scale=2):
"""Plot a list of images."""
figsize = (num_cols * scale, num_rows * scale)
_, axes = d2l.plt.subplots(num_rows, num_cols, figsize=figsize)
for i in range(num_rows):
for j in range(num_cols):
axes[i][j].imshow(imgs[i * num_cols + j])
axes[i][j].axes.get_xaxis().set_visible(False)
axes[i][j].axes.get_yaxis().set_visible(False)
return axes
def plot_learning_curves(train_acc, test_acc, train_loss, test_loss):
"""Plot the learning curves."""
d2l.plt.plot(train_acc, linestyle='-', color='blue', label='train accuracy')
d2l.plt.plot(test_acc, linestyle='--', color='red', label='test accuracy')
d2l.plt.xlabel('epochs')
d2l.plt.ylabel('accuracy')
d2l.plt.legend(loc='upper right')
d2l.plt.twinx()
d2l.plt.plot(train_loss, linestyle='-', color='green', label='train loss')
d2l.plt.plot(test_loss, linestyle='--', color='orange', label='test loss')
d2l.plt.ylabel('loss')
d2l.plt.legend(loc='upper left')
d2l.plt.show()
def set_axes(axes, xlabel, ylabel, xlim, ylim, xscale, yscale, legend):
"""Set the axes for matplotlib."""
axes.set_xlabel(xlabel)
axes.set_ylabel(ylabel)
axes.set_xscale(xscale)
axes.set_yscale(yscale)
if xlim:
axes.set_xlim(xlim)
if ylim:
axes.set_ylim(ylim)
if legend:
axes.legend(legend)
axes.grid()
游戏规则:一付扑克牌,去掉大小王,每个玩家发3张牌,最后比大小,看谁赢。单张最大的是A,牌的大小顺序为,豹子>顺金>顺子>对子>单张,用python写函数,返回一个扑克牌列表,里面有52项,每一项都是一个tuple。 例如:[(“♥”,“2”), (“♣”,“2”), (“♠”,”K”), (“♦”,“A”),………………….] poke_types = ["♥", "♠", "♣", "♦"] poke_nums = [2, 3, 4, 5, 6, 7, 8, 9, 10, "J", "Q", "K", "A"] 写一函数,判定三张扑克牌是否是同花? 写一函数,判定三张扑克牌是否是豹子? 写一函数,判定三张扑克牌是否是同花顺?
下面是三个函数的代码:
```python
poke_types = ["♥", "♠", "♣", "♦"]
poke_nums = [2, 3, 4, 5, 6, 7, 8, 9, 10, "J", "Q", "K", "A"]
def is_same_suit(poke_list):
"""
判断三张扑克牌是否是同花
"""
suits = set([poke[0] for poke in poke_list])
return len(suits) == 1
def is_three_of_a_kind(poke_list):
"""
判断三张扑克牌是否是豹子
"""
nums = [poke_nums.index(poke[1]) for poke in poke_list]
return len(set(nums)) == 1
def is_straight_flush(poke_list):
"""
判断三张扑克牌是否是同花顺
"""
if not is_same_suit(poke_list):
return False
nums = [poke_nums.index(poke[1]) for poke in poke_list]
nums.sort()
if nums == [0, 1, 12]:
# 特殊情况,A234是最小的顺子
return True
for i in range(2, len(nums)):
if nums[i] - nums[i-1] != 1:
return False
return True
```
使用示例:
```python
poke_list = [("♥", "2"), ("♣", "2"), ("♠", "K")]
print(is_same_suit(poke_list)) # False
print(is_three_of_a_kind(poke_list)) # False
print(is_straight_flush(poke_list)) # False
poke_list = [("♥", "A"), ("♥", "A"), ("♥", "A")]
print(is_same_suit(poke_list)) # True
print(is_three_of_a_kind(poke_list)) # True
print(is_straight_flush(poke_list)) # False
poke_list = [("♦", "10"), ("♦", "J"), ("♦", "Q")]
print(is_same_suit(poke_list)) # True
print(is_three_of_a_kind(poke_list)) # False
print(is_straight_flush(poke_list)) # True
```