Python 写入函数：plt的绘图栏，带有plt.title（）的可选参数

您不能简单地将任意参数放入不需要它们的函数中

需要一个字符串作为输入

可以使用format方法生成字符串

def plot_coexpression(new, gene1='', gene2='', gene3='', gene4='', gene5='', gene6=''):
    X, Y = zip(*new)
    import seaborn as sns
    sns.set()
    import matplotlib.pyplot as plt 
    %matplotlib inline
    plt.figure(figsize = (20, 10))
    plt.title('Genes most commonly co-expressed with' gene1="axin", gene2="lef", gene3="lgr", gene4="nkd", gene5="", gene6="", fontsize=40)

    ax = plt.bar(range(len(X)), Y, 0.6, align='center', tick_label = X, color="green") 
    ax = plt.xticks(rotation=90)


  File "<ipython-input-3-a3383d66ce8c>", line 8
    plt.title('Genes most commonly co-expressed with' gene1="axin", gene2="lef", gene3="lgr", gene4="nkd", gene5="", gene6="", fontsize=40)

def plot_coexpression(new, gene1=None, gene2=None, gene3=None, gene4=None, gene5=None, gene6=None):
    X, Y = zip(*new)
    plt.figure(figsize = (20, 10))
    plt.title('Genes most commonly co-expressed with' gene1, gene2, gene3, gene4, gene5, gene6,"'", fontsize=40)
    ax = plt.bar(range(len(X)), Y, 0.6, align='center', tick_label = X, color="green") 
    ax = plt.xticks(rotation=90)

mytitle = "This is my title, containing {gene1}".format(gene1="axin")
plt.title(mytitle)